𝚂𝙲𝙸𝙴𝙽𝙲𝙴

• Acanthochronology – study of cactus spines grown in time ordered sequence.
• Acarology – study of mites and ticks.
• Aceology – science of remedies, or of therapeutics; iamatology.
• Acology – study of medical remedies.
• Acoustics – science of sound.
• Actinobiology – synonymous with radiobiology.
• Adenology – study of glands
• Aedoeology – science of generative organs.
• Aerobiology – study of airborne organisms.
• Aerodonetics – science or study of gliding.
• Aerodynamics – dynamics of gases; science of movement in a flow of air or gas.
• Aerolithology – study of aerolites; meteorites.
• Aeropalynology – study of pollens and spores in atmosphere.
• Aerology – study of the atmosphere.
• Aeronautics – study of navigation through air or space.
• Aerostatics – science of air pressure; art of ballooning.
• Agnoiology – study of ignorance.
• Agonistics – art and theory of prize-fighting.
• Agriology – comparative study of primitive peoples.
• Agrobiology – study of plant nutrition; soil yields.
• Agroecology – study of ecological processes applied to agricultural production systems.
• Agrogeology – study of agrominerals.
• Agrology – study of agricultural soils.
• Agronomics – study of productivity of land.
• Agrostology – science or study of grasses.
• Alethiology – study of truth.
• Algedonics – science of pleasure and pain.
• Algology (botany) – study of algae.
• Algology (medicine) – study of pain.
• Anaesthesiology – study of anaesthetics.
• Anatomy – study of the structure of the body.
• Andragogy – theory and practice of education of adults.
• Andrology – study of men's physiology.
• Anemology – study of wind.
• Angiology – study of blood flow and lymphatic system.
• Anthropobiology – study of human biology.
• Anthropology – study of human cultures.
• Anthrozoology – study of human-animal interaction.
• Apiology – study of bees.
• Aquatic ecology – study of aquatic environment.
• Arachnology – study of arachnids.
• Archaeology – study of human material remains.
• Archelogy – study of first principles.^[1]
• Archology – science of the origins of government.
• Areology – study of Mars.
• Aretaics – science of virtue.
• Aristology – science or art of dining.
• Aromachology – study of smell and odor.
• Arthrology – study of joints.
• Arthropodology – study of arthropods like insects and arachnids.
• Astacology – science of crayfish.
• Asteroseismology – study of star oscillations.
• Astheniology – study of diseases of weakening and aging.
• Astrobotany – study of plants in space.
• Astrobiology – study of extraterrestrial life.
• Astrodynamics – study of motion of rockets and spacecraft.
• Astrogeology – study of extraterrestrial geology.
• Astronomy – study of celestial bodies and phenomena.
• Astrophysics – study of behaviour of interstellar matter.
• Atmology – the science of aqueous vapor.
• Audiology – study of hearing.
• Autecology – study of ecology of one species.
• Autology – scientific study of oneself.
• Auxology – science of growth.
• Avionics – science of electronic devices for aircraft.
• Axiology – science of the ultimate nature of value.

B

• Bacteriology – study of bacteria.
• Balneology – science of the therapeutic use of baths.
• Batrachology – study of frogs.
• Barodynamics – science of the support and mechanics of bridges.
• Barology – study of gravitational force.
• Bathymetry – study of underwater depth of ocean floors or lake floors.
• Batology – the study of brambles.
• Bibliology – study of books.
• Bibliotics – study of documents to determine authenticity.
• Bioecology – study of interaction of life in the environment.
• Biogeochemistry – study of chemistry of the surface of the Earth.
• Biology – study of life.
• Biochemistry – study of chemical processes within and relating to living organism.
• Biomechanics – study of the structure, function and motion of the mechanical aspects of biological systems.
• Biometrics – study of biological measurement for security purposes.
• Bionomics – study of organisms interacting in their environments.
• Biophysics – study of physics of biological phenomena.
• Biopsychology – application of the science of biology to the study of psychology.
• Biotribology – study of friction, wear and lubrication of biological systems.
• Botany – study of plants.
• Bromatology – study of food.
• Bryology – study of mosses and liverworts.

C

• Cacogenics – study of racial degeneration.
• Caliology – study of bird's nests.
• Calorifics – study of heat.
• Cambistry – science of international exchange.
• Campanology – study of bells.
• Carcinology – study of crabs and other crustaceans.
• Cardiology – study of the heart.
• Caricology – study of sedges.
• Carpology – study of fruit.
• Cartography – science of making maps and globes.
• Castrametation – art of designing a camp.
• Catacoustics – science of echoes or reflected sounds.
• Catallactics – science of commercial exchange.
• Catechectics – art of teaching by question and answer.
• Celestial mechanics – study of motion of objects in outer space.
• Cell biology – study of the different structures and functions of both eukaryote and prokaryote cells.
• Cetology – study of whales and dolphins.
• Chalcography – art of engraving on copper or brass.
• Chalcotriptics – art of taking rubbings from ornamental brasses.
• Chaology – study of chaos or chaos theory.
• Characterology – study of development of character.
• Chemistry – study of properties and behaviours of substances.
• Chirocosmetics – beautifying the hands; art of manicure.
• Chirography – study of handwriting or penmanship.
• Chirology – study of the hands.
• Chiropody – medical science of feet.
• Chorology – science of the geographic description of anything.
• Chrematistics – study of wealth; political economy.
• Chromatics – study of color.
• Chronobiology – study of biological rhythms.
• Chrysology – study of precious metals.
• Ciselure – art of chasing metal.
• Classical mechanics – study of motion of macroscopic objects.
• Climatology – study of climate.
• Clinology – study of aging or individual decline after maturity.
• Codicology – study of manuscripts.
• Coleopterology – study of beetles and weevils.
• Cometology – study of comets.
• Computer science – study of processes that interact with data.
• Conchology – study of shells.
• Connectomics – study of connectomes.
• Contact mechanics – study of the deformation of solids that touch each other.
• Coprology – study of feces.
• Cosmetology – study of cosmetics.
• Cosmochemistry – study of the chemical composition of matter in the universe and the processes that led to those compositions.
• Cosmology – study of the universe.
• Craniology – study of the skull.
• Criminology – study of crime and criminals.
• Cryobiology – study of life under cold conditions.
• Cryptology – study of codes.
• Cryptozoology – study of animals for whose existence there is no conclusive proof.
• Ctetology – study of the inheritance of acquired characteristics.
• Cyclonology – study of tropical cyclones, e.g. hurricanes.
• Cynology – scientific study of dogs.
• Cytology – study of living cells.

D

• Dactyliology – study of rings.
• Dactylography – study of fingerprints.
• Dactylology – study of sign language.
• Deltiology – collection and study of picture postcards.
• Demography – study of population.
• Demology – study of human behaviour.
• Dendrochronology – study of tree rings.
• Dendrology – study of trees.
• Deontology – theory or study of moral obligation.
• Dermatoglyphics – study of skin patterns and fingerprints.
• Dermatology – study of skin.
• Desmology – study of ligaments.
• Diabology – study of devils.
• Diagraphics – art of making diagrams or drawings.
• Dialectology – study of dialects.
• Dietetics – study of prevention of health conditions and diseases through human nutrition and regulation of diet.
• Dioptrics – study of light refraction.
• Diplomatics – science of deciphering ancient writings and texts.
• Diplomatology – study of diplomats.
• Docimology – art of assaying.
• Dosiology – study of doses.
• Dynamics – study of forces and their effects on motion.
• Dysgenics – study of racial degeneration.

E

• Ecclesiology – study of church affairs.
• Eccrinology – study of excretion.
• Ecology – study of environment.
• Economics – study of material wealth (production, distribution, and consumption of goods and services).
• Edaphology – study of soils.
• Egyptology – study of ancient Egypt.
• Eidology – study of mental imagery.^[2]
• Ekistics – study of human settlement.
• Electrochemistry – study of relations between electricity and chemicals.
• Electrodynamics – study of the effects arising from the interactions of electric currents with magnets, with other currents, or with themselves.
• Electrology – study of electricity.
• Electrostatics – study of static electricity.
• Electromagnetism – study of electromagnetic force.
• Embryology – study of embryos
• Emetology – study of vomiting.
• Emmenology – study of menstruation.
• Endemiology – study of local diseases.
• Endocrinology – study of glands.
• Energetics – study of energy under transformation within various fields.
• Engineering studies – study of engineering.
• Enigmatology – study of enigmas (puzzles).
• Entomology – study of insects.
• Entozoology – study of parasites that live inside larger organisms.
• Enzymology – study of enzymes.
• Ephebiatrics – branch of medicine dealing with adolescence.
• Epidemiology – study of diseases and epidemics.
• Epileptology – study of epilepsy.
• Epistemology – study of grounds of knowledge.
• Eremology – study of deserts.
• Ergology – study of effects of work on humans.
• Ergonomics – study of people at work.
• Escapology – study of freeing oneself from constraints.
• Eschatology – study of death; final matters.
• Ethnobiology – study of dynamic relationships between peoples.
• Ethnobotany – study of a region's plants and their practical uses through the traditional knowledge of a local culture and people.
• Ethnogeny – study of origins of races or ethnic groups.
• Ethnochoreology – study of dances and its implication in culture.
• Ethnomusicology – study of comparative musical systems.
• Ethnology – study of cultures.
• Ethnomethodology – study of everyday communication and social interaction.
• Ethology – study of natural or biological character.
• Ethonomics – study of economic and ethical principles of a society.
• Etiology – science of causes, especially of disease.
• Etymology – study of origins of words.
• Euthenics – science concerned with improving living conditions.
• Exobiology – study of extraterrestrial life.
• Exoplanetology – study of exoplanets.

F

• Felinology – study of felines.
• Finance – science or study of money management.
• Floristry – art of cultivating and selling flowers.
• Fluid dynamics – study of flow of fluids.
• Fluid mechanics – study of fluids behaviour at rest and in motion.
• Fluid statics – study of fluids behaviour at rest.
• Fluviology – study of watercourses.
• Folkloristics – study of folklore and fables.
• Forestry – study of the creation, management, use, conservation, and repair of forests and associated resources.
• Fracture mechanics – study of the propagation of cracks in materials.
• Futurology – study of future.

G

• Garbology – study of garbage
• Gastroenterology – study of the digestive system
• Gastronomy – study of fine dining
• Gemmology – study of gems and jewels
• Gender Studies – study of gender
• Genealogy – study of descent of families
• Genesiology – study of reproduction and heredity
• Genetics – study of genes
• Geochemistry – study of chemistry of the earth's crust
• Geochronology – study of measuring geological time
• Geography – study of surface of the earth and its inhabitants
• Geology – study of the rocks of a planet
• Geometry – study the sizes, shapes, positions angles and dimensions of things.
• Geomorphogeny – study of the characteristics, origins, and development of land forms
• Geomorphology – study of landforms and landform evolution
• Geoponics – study of agriculture
• Geotechnics – study of increasing habitability of the earth
• Geratology – study of decadence and decay
• Gerocomy – study of old age
• Gerontology – study of the elderly and aging
• Gigantology – study of giants
• Glaciology – study of ice ages and glaciation
• Glossology – study of language; study of the tongue
• Glyptography – art of engraving on gems
• Glyptology – study of gem engravings
• Gnomonics – the art of measuring time using sundials
• Gnosiology – study of knowledge; philosophy of knowledge
• Gnotobiology – study of life in germ-free conditions
• Graminology – study of grasses
• Grammatology – study of systems of writing
• Graphemics – study of systems of representing speech in writing
• Graphology – study of handwriting
• Gromatics – science of surveying
• Gynaecology – study of women's physiology
• Gyrostatics – study of rotating bodies

H

• Haemataulics – study of movement of blood through blood vessels
• Hagiology – study of saints
• Halieutics – study of fishing
• Hamartiology – study of sin
• Harmonics – study of musical acoustics
• Hedonics – part of ethics or psychology dealing with pleasure
• Helcology – study of ulcers
• Heliology – science of the sun
• Helioseismology – study of sun's interior by observing its surface oscillations
• Helminthology – study of worms
• Hematology – study of blood
• Hemodynamics – study of the dynamics behind blood circulation
• Hepatology – study of liver, gallbladder, biliary tree, and pancreas
• Heredity – study of passing of traits from parents to offspring
• Heresiology – study of heresies
• Hermeology – study of Mercury
• Herpetology – study of reptiles and amphibians
• Hierology – science of sacred matters
• Hippiatrics – study of diseases of horses
• Hippology – study of horses
• Histology – study of the tissues of organisms
• Histopathology – study of changes in tissue due to disease
• Historiography – study of writing history
• Historiology – study of history
• Homiletics – art of preaching
• Home Economics – deals with home and economics
• Hoplology – study of human combative behavior and performance
• Horography – art of constructing sundials or clocks
• Horology – science of time measurement
• Horticulture – study of gardening
• Hydrobiology – study of aquatic organisms
• Hydrodynamics – study of movement in liquids
• Hydrogeology – study of ground water
• Hydrography – study of investigating bodies of water
• Hydrokinetics – study of motion of fluids
• Hydrology – study of water resources
• Hydrometeorology – study of atmospheric moisture
• Hydropathy – study of treating diseases with water
• Hydrostatics – study of fluids behaviour at rest
• Hyetology – science of rainfall
• Hygiastics – science of health and hygiene
• Hygienics – study of sanitation; health
• Hygiology – hygienics; study of cleanliness
• Hygroscopy – study of humidity
• Hygrometry – science of humidity
• Hymnography – study of writing hymns
• Hymnology – study of hymns
• Hypnology – study of sleep; study of hypnosis
• Hypsography – science of measuring heights

I

• Iamatology – study of remedies
• Iatrology – treatise or text on medical topics; study of medicine
• Iatromathematics – archaic practice of medicine in conjunction with astrology
• Ichnography – art of drawing ground plans; a ground plan
• Ichnology – science of fossilized footprints
• Ichthyology – study of fish
• Iconography – study of drawing symbols
• Iconology – study of icons; symbols
• Ideogeny – study of origins of ideas
• Ideology – science of ideas; system of ideas used to justify behaviour
• Idiomology – study of idiom, jargon or dialect
• Idiopsychology – study of the psychology of one's own mind
• Immunochemistry – study of chemistry of the immune system
• Immunogenetics – study of genetic characteristics of immunity
• Immunology – study of immunity
• Immunopathology – study of immunity to disease
• Insectology – study of insects
• Irenology – study of peace
• Iridology – study of the iris; diagnosis of disease based on the iris of the eye

K

• Kalology – study of beauty
• Karyology – study of cell nuclei
• Kinematics – study of motion
• Kinesics – study of gestural communication
• Kinesiology – study of human movement and posture
• Kinetics – study of forces producing or changing motion
• Koniology – study of atmospheric pollutants and dust
• Ktenology – science of putting people to death
• Kymatology – study of wave motion

L

• Labeorphily – collection and study of beer bottle labels
• Larithmics – study of population statistics
• Laryngology – study of larynx
• Lepidopterology – study of butterflies and moths
• Leprology – study of leprosy
• Lexicology – study of words and their meanings
• Lexigraphy – art of definition of words
• Lichenology – study of lichens
• Library and information science – study of organization, access, collection, and protection/regulation of information, whether in physical or digital forms.
• Limacology – study of slugs
• Limnobiology – study of freshwater ecosystems
• Limnology – study of bodies of fresh water
• Linguistics – study of language
• Liturgiology – study of liturgical forms and church rituals
• Loimology – study of plagues and epidemics
• Loxodromy – study of sailing along rhumb-lines
• Ludology – study of games

M

• Macroeconomics – branch of economics dealing with the performance, structure, behavior, and decision-making of the whole economy
• Magirics – art of cookery
• Magnanerie – art of raising silkworms
• Magnetics – study of magnetism
• Magnetohydrodynamics – study of electrically conducting fluids
• Magnetostatics – study of magnetic fields in systems where the currents are steady
• Malacology – study of molluscs
• Malariology – study of malaria
• Mammalogy – study of mammals
• Manège – art of horsemanship
• Mariology – study of the Virgin Mary
• Marine biology – study of the ocean's ecosystem
• Mastology – study of mammals
• Mathematics – study of magnitude, number, and forms
• Mazology – mammalogy; study of mammals
• Mechanics – study of action of force on bodies
• Meconology – study of or treatise concerning opium
• Media studies – study of mass media
• Medicine – science of diagnosis, prognosis, treatment, and prevention of disease
• Melissopalynology – study of honey
• Melittology – study of bees
• Melology – study of music; musicology
• Mereology – study of part-whole relationships
• Mesology – ecology
• Metallogeny – study of the origin and distribution of metal deposits
• Metallography – study of the structure and constitution of metals
• Metallurgy – study of alloying and treating metals
• Metaphysics – study of principles of nature and thought
• Metapolitics – study of politics in theory or abstract
• Metapsychology – study of nature of the mind
• Metascience – study of science
• Meteoritics – study of meteors
• Meteorology – study of weather
• Methodology – the study or description of methods
• Methyology – study of alcohol
• Metrics – study of versification
• Metrology – science of weights and measures
• Microanatomy – study of microscopic tissues
• Microbial ecology – study of microbial environment
• Microbiology – study of microscopic organisms
• Microclimatology – study of local climates
• Microeconomics – branch of economics that studies the behavior of individual households and firms in making decisions on the allocation of limited resources
• Micrology – study or discussion of trivialities
• Micropalaeontology – study of microscopic fossils
• Microphytology – study of very small plant life
• Microscopy – study of minute objects
• Mineralogy – study of minerals
• Molecular biology – study of the molecular basis of biological activity in and between cells
• Molinology – study of mills and milling
• Momilogy – study of mummies
• Morphology – study of forms and the development of structures
• Muscology – study of mosses
• Museology – study of museums
• Musicology – study of music
• Mycology – study of funguses
• Myology – study of muscles
• Myrmecology – study of ants
• Mythology – study of myths; fables; tales

N

• Naology – study of church or temple architecture
• Nasology – study of the nose
• Nautics – art of navigation
• Necroplanetology – study of the destruction of planets^[3]
• Nematology – study of nematodes
• Neonatology – study of newborn babies
• Neossology – study of nestling birds
• Nephology – study of clouds
• Nephrology – study of the kidneys
• Neurobiology – study of anatomy of the nervous system
• Neuroeconomics – study of human decision making and the ability to process multiple alternatives and to choose an optimal course of action
• Neurology – study of nervous system
• Neuropsychology – study of relation between brain and behaviour
• Neurypnology – study of hypnotism
• Neutrosophy – study of the origin and nature of philosophical neutralities
• Nomology – the science of the laws; especially of the mind
• Noology – science of the intellect
• Nosology – study of diseases
• Nostology – study of senility
• Notaphily – study and collecting of bank-notes and cheques
• Numerology – pseudoscientific study of numbers
• Numismatics – study of coins
• Nymphology – study of nymphs
• Nanotechnology – study of nanite

O

• Obstetrics – study of midwifery
• Oceanography – study of oceans
• Oceanology – study of oceans
• Odontology – study of teeth
• Odonatology– study of dragonflies and damselflies
• Oenology – study of wines
• Oikology – science of housekeeping
• Olfactology – study of the sense of smell
• Ombrology – study of rain
• Oncology – study of tumours
• Oneirology – study of dreams
• Onomasiology – study of nomenclature
• Onomastics – study of proper names
• Ontology – science of pure being; the nature of things
• Oology – study of eggs
• Ophiology – study of snakes
• Ophthalmology – study of eye diseases
• Optics – study of light
• Optology – study of sight
• Optometry – science of examining the eyes
• Orchidology – study of orchids
• Ornithology – study of birds
• Organology (biology) – study of form, structure, development, and functions of plant or animal organs
• Organology (musicology) – study of musical instruments in relation to history, culture, construction, acoustic properties and classification
• Orology – study of mountains
• Orthoepy – study of correct pronunciation
• Orthography – study of spelling
• Orthopterology – study of cockroaches
• Oryctology – mineralogy or paleontology
• Osmics – scientific study of smells
• Osmology – study of smells and olfactory processes
• Osphresiology – study of the sense of smell
• Osteology – study of bones
• Otology – study of the ear
• Otorhinolaryngology – study of ear, nose and throat

P

• Paedology – study of children
• Paidonosology – study of children's diseases; pediatrics
• Palaeoanthropology – study of early humans
• Palaeobiology – study of fossil plants and animals
• Palaeoclimatology – study of ancient climates
• Palaeoichthyology – study of ancient fish
• Palaeolimnology – study of ancient lakes
• Palaeontology – study of fossils
• Palaeopedology – study of early soils
• Paleobotany – study of ancient plants
• Paleo-osteology – study of ancient bones
• Palynology – study of pollen
• Papyrology – study of paper
• Paradoxology – study of paradoxes
• Parapsychology – study of unexplained mental phenomena
• Parasitology – study of parasites
• Paroemiology – study of proverbs
• Parthenology – study of virgins
• Pataphysics – science of imaginary solutions
• Pathology – study of disease
• Patrology – study of early Christianity
• Pedagogics – study of teaching
• Pedology – study of soils
• Pelology – study of mud
• Penology – study of crime and punishment
• Periodontics – study of gums
• Peristerophily – pigeon-collecting
• Pestology – science of pests
• Petrology – study of rocks
• Pharmacognosy – study of drugs of animal and plant origin
• Pharmacology – study of drugs
• Pharology – study of lighthouses
• Pharyngology – study of the throat
• Phenology – study of organisms as affected by climate
• Phenomenology – study of phenomena
• Philematology – act or study of kissing
• Phillumeny – collecting of matchbox labels
• Philology – study of ancient texts; historical linguistics
• Philosophy – science of knowledge or wisdom
• Phoniatrics – study and correction of speech defects
• Phonology – study of speech sounds
• Photobiology – study of effects of light on organisms
• Photonics – study of photons
• Phraseology – study of phrases
• Phrenology – study of bumps on the head
• Phycology – study of algae and seaweeds
• Physics – study of properties of matter, force and energy
• Physiology – study of processes of life
• Phytology – study of plants; botany
• Piscatology – study of fishes
• Pisteology – science or study of faith
• Planetology – study of planets
• Plumology – study of feathers
• Plutology – political economy; study of wealth
• Pneumatics – study of mechanics of gases
• Pneumonology – study of diseases involving the respiratory tract
• Podiatry – study and treatment of disorders of the foot; chiropody
• Podology – study of the feet
• Polemology – study of war
• Pomology – study of fruit-growing
• Pogonology – study of beards
• Posology – science of quantity or dosage
• Potamology – study of rivers
• Praxeology – study of practical or efficient activity; science of efficient action
• Primatology – study of primates
• Proctology – study of rectum, anus, and colon
• Prosody – study of versification
• Protistology – study of protists
• Proxemics – study of man's need for personal space
• Psalligraphy – art of paper-cutting to make pictures
• Psephology – study of election results and voting trends
• Pseudology – art or science of lying
• Pseudoptics – study of optical illusions
• Psychobiology – study of biology of the mind
• Psychogenetics – study of internal or mental states
• Psychognosy – study of mentality, personality or character
• Psychology – study of mind
• Psychopathology – study of mental illness
• Psychophysics – study of link between mental and physical processes
• Pteridology – study of ferns
• Pterylology – study of distribution of feathers on birds
• Punnology – study of puns^[4]
• Pyretology – study of fevers
• Pyrgology – study of towers
• Pyroballogy – study of artillery
• Pyrography – study of woodburning
• Pyrotechnics – study of combustion through fire or explosions

Q

• Quinology – study of quinine.
• Quantum computing – the exploitation of collective properties of quantum states, such as superposition and entanglement, to perform computation.
• Quantum mechanics – a fundamental theory in physics which describes nature at the smallest scales of energy levels of atoms and subatomic particles
• Queer theory – study of issues related to sexual orientation and gender identity

R

• Raciology – study of racial differences
• Radiobiology – study of the scientific principles, mechanisms, and effects of the interaction of ionizing radiation with living matter
• Radiochemistry – study of ordinary chemical reactions under radioactive circumstances
• Radiology – study of X-rays and their medical applications
• Reflexology – study of reflexes
• Rheology – science of the deformation or flow of matter
• Rheumatology – study of rheumatism
• Rhinology – study of the nose
• Rhochrematics – science of inventory management and the movement of products
• Robotics – deals with the designing, construction, and operation of robots
• Runology – study of runes

S

• Sarcology – study of fleshy parts of the body
• Satanology – study of the devil
• Scatology – study of excrement or obscene literature
• Schematonics – art of using gesture to express tones
• Sciagraphy – art of shading
• Scripophily – collection of bond and share certificates
• Sedimentology – study of sediment
• Seismology – study of earthquakes
• Selenodesy – study of the shape and features of the moon
• Selenology – study of the moon
• Semantics – study of meaning
• Semantology – science of meanings of words
• Semasiology – study of meaning; semantics
• Semiology – study of signs and signals
• Semiotics – study of signs and symbols
• Serology – study of serums
• Sexology – study of sexual behaviour
• Siderology – study of iron and its alloys, including steel
• Significs – science of meaning
• Silvics – study of tree's life
• Sindonology – study of the shroud of Turin
• Sinology – study of China
• Sitology – dietetics
• Sociobiology – study of biological basis of human behaviour
• Sociology – study of society
• Solid mechanics – study of behaviour of solid materials
• Somatology – science of substances
• Sophiology – science of ideas
• Soteriology – study of theological salvation
• Snow hydrology – study of snow
• Spectrology – study of ghosts
• Spectroscopy – study of spectra
• Speleology – study and exploration of caves
• Spermology – study of seeds
• Sphagnology – study of peat moss
• Sphygmology – study of the pulse
• Splanchnology – study of the entrails or viscera
• Spongology – study of sponges
• Stasiology – study of political parties
• Statics – study of bodies and forces in equilibrium
• Stellar astronomy – study of stars, their origins, and their evolution.
• Stemmatology – study of relationships between text
• Stereochemistry – study of chemistry of the relative spatial arrangement of atoms that form the structure of molecules and their manipulation.
• Stoichiology – science of elements of animal tissues
• Stomatology – study of the mouth
• Storiology – study of folk tales
• Stratigraphy – study of geological layers or strata
• Stratography – art of leading an army
• Stylometry – studying literature by means of statistical analysis
• Suicidology – study of suicide
• Supramolecular chemistry – study of the chemistry of assembled molecular sub-units
• Symbology – study of symbols
• Symptomatology – study of symptoms of illness
• Synecology – study of ecological communities
• Synectics – study of processes of invention
• Syntax – study of sentence structure
• Syphilology – study of syphilis
• Systematics – study of the diversification of living forms, both past and present
• Systems science – study of systems

T

• Taxidermy – art of curing and stuffing animals
• Taxonomy – study of plant, animals and microorganisms classification
• Tectonics – science of structure of objects, buildings and landforms
• Tegestology – study and collecting of beer mats
• Teleology – study of final causes; analysis in terms of purpose
• Telmatology – study of swamps
• Tempestology – study of tropical cyclones, e.g. hurricanes
• Teratology – study of birth defects and later abnormalities in living organisms
• Terrestrial ecology – study of terrestrial environment
• Teuthology – study of cephalopods
• Textology – study of the production of texts
• Thalassography – science of the sea
• Thanatology – study of death and its customs
• Thaumatology – study of miracles
• Theoretical computer science – science combining computer science and mathematics
• Theriogenology – study of animals' reproductive systems
• Thermodynamics – study of relation of heat to motion
• Thermokinematics – study of motion of heat
• Thermology – study of heat
• Therology – study of wild mammals
• Thremmatology – science of breeding domestic animals and plants
• Threpsology – science of nutrition
• Tidology – study of tides
• Timbrology – study of postage stamps
• Tocology – obstetrics; midwifery
• Tokology – study of childbirth
• Tonetics – study of pronunciation
• Topography – study of the shape and features of land surfaces
• Topology – study of places and their natural features
• Toponymics – study of place-names
• Toreutics – study of artistic work in metal
• Toxicology – study of poisons
• Toxophily – love of archery; archery; study of archery
• Traumatology – study of wounds and their effects
• Tribology – study of friction and wear between surfaces
• Trichology – study of hair and its disorders
• Trophology – study of nutrition
• Tsiganology – study of gypsies
• Turbology – study of tornadoes
• Turnery – art of turning in a lathe
• Typhlology – study of blindness and the blind
• Typography – art of printing or using type
• Typology – study of types of things

U

• Uranography – descriptive astronomy and mapping
• Uranology – study of the heavens; astronomy
• Urbanology – study of cities
• Urenology – study of rust molds
• Urology – study of urine and the urinary tract

V

• Venereology – study of venereal disease
• Veterinary medicine – study of medicine in domesticated animals
• Vexillology – study of flags
• Victimology – study of victims
• Vinology – scientific study of vines and winemaking
• Virology – study of viruses
• Vitrics – study of glassy materials; glassware
• Volcanology – study of volcanoes

X

• Xenobiology – study of biological systems which do not exist in nature
• Xylography – art of engraving on wood
• Xylology – study of wood

Z

• Zenography – study of the planet Jupiter
• Zooarchaeology – study of animal remains of archaeological sites
• Zoochemistry – study of chemistry of animals
• Zoogeography – study of geographic distribution of animals
• Zoogeology – study of fossil animal remains
• Zoology – study of animals
• Zoonomy – animal physiology
• Zoonosology – study of animal diseases
• Zoopathology – study of animal diseases
• Zoophysics – physics of animal bodies
• Zoophysiology – study of physiology of animals
• Zoophytology – study of plant-like animals
• Zoosemiotics – study of animal communication
• Zootaxy – science of classifying animals
• Zootechnics – science of breeding animals
• Zygology – science of joining and fastening
• Zymology – science of fermentation
• Zymurgy – branch of chemistry dealing with brewing and distilling
• Zythology – study of beer