B

• Balneology – science of the therapeutic use of baths
• Bibliology – study of books
• Bioecology – study of interaction of life in the environment
• Biometrics – study of biological measurement
• Bionomics – study of organisms interacting in their environments
• 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 – art of bell ringing
• 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
• Cartophily – hobby of collecting cigarette cards
• Castrametation – art of designing a camp
• Catacoustics – science of echoes or reflected sounds
• Catalactics – science of commercial exchange
• Catechectics – art of teaching by question and answer
• 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
• 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
• Chronobiology – study of biological rhythms
• Chrysology – study of precious metals
• Ciselure – art of chasing metal
• 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
• Conchology – study of shells
• Coprology – study of pornography
• Cosmetology – study of cosmetics
• Cosmology – study of the universe
• Craniology – study of the skull
• Criminology – study of crime; 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
• 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
• Demonology – study of demons
• 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
• 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
• Dramaturgy – art of producing and staging dramatic works
• Dysgenics – study of racial degeneration
• Dysteleology – study of purposeless organs

E - F

• Ecclesiology – study of church affairs
• Eccrinology – study of excretion
• Ecology – study of environment
• Edaphology – study of soils
• Egyptology – study of ancient Egypt
• Ekistics – study of human settlement
• Electrochemistry – study of relations between electricity and chemicals
• Electrology – study of electricity
• Emetology – study of vomiting
• Emmenology – study of menstruation
• Endemiology – study of local diseases
• Endocrinology – study of glands
• Enigmatology – study of enigmas
• 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; 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
• Ethnogeny – study of origins of races or ethnic groups
• Ethnomethodology – study of everyday communication
• Ethnomusicology – study of comparative musical systems
• 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
• Floristry – art of cultivating and selling flowers
• Fluviology – study of watercourses
• Folkloristics – study of folklore and fables

G

• Garbology – study of garbage
• Gastroenterology – study of stomach; intestines
• Gastronomy – study of fine dining
• Gemmology – study of gems and jewels
• Genealogy – study of descent of families
• Genesiology – study of reproduction and heredity
• Genethlialogy – art of casting horoscopes
• Geochemistry – study of chemistry of the earth's crust
• Geochronology – study of measuring geological time
• Geogeny – science of the formation of the earth's crust
• Geogony – study of formation of the earth
• Geomorphogeny – study of the origins of land forms
• 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; 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
• Heortology – study of religious feasts
• Hepatology – study of liver
• Heraldry – study of coats of arms
• Heresiology – study of heresies
• 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
• Hoplology – study of weapons
• 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
• 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
• 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
• 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

M

N

• Naology – study of church or temple architecture
• Nasology – study of the nose
• Nautics – art of navigation
• 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
• 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 – collecting of bank-notes and cheques
• Numerology – pseudoscientific study of numbers
• Numismatics – study of coins
• Nymphology – study of nymphs

O

• Obstetrics – study of midwifery
• Oceanography – study of oceans
• Oceanology – study of oceans
• Odontology – study of teeth
• 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
• 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
• Paedotrophy – art of rearing 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
• Palaeolimnology – 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
• 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
• Philately – study of postage stamps
• 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
• Phraseology – study of phrases
• Phrenology – study of bumps on the head
• Phycology – study of algae and seaweeds
• Physics – study of properties of matter 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
• Plutology – political economy; study of wealth
• Pneumatics – study of mechanics of gases
• Podiatry – study and treatment of disorders of the foot; chiropody
• Podology – study of the feet
• Polemology – study of war
• Pomology – study of fruit-growing
• 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
• 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
• Pyretology – study of fevers
• Pyrgology – study of towers
• Pyroballogy – study of artillery
• Pyrography – study of woodburning

Q

• Quinology – study of quinine

R

• Raciology – study of racial differences
• Radiology – study of X-rays and their medical applications
• Reflexology – study of reflexes
• Rhabdology – knowledge or learning concerning divining rods
• Rhabdology – art of calculating using numbering rods
• 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
• 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: যৌনবিজ্ঞান
• Siderography – art of engraving on steel
• Sigillography – study of seals
• 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
• Somatology – science of the properties of matter
• Sophiology – science of ideas
• Soteriology – study of theological salvation
• Spectrology – study of ghosts
• Spectroscopy – study of spectra
• Speleology – study and exploration of caves
• Spermology – study of seeds
• Sphagnology – study of peat moss
• Sphragistics – study of seals and signets
• 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
• Stemmatology – study of relationships between texts
• 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
• 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
• Systematology – study of systems