Ologies/Main

A

 * Acarology, the study of ticks and mites
 * Actinobiology, the study of the effects of radiation on living organisms
 * Actinology, the study of the effect of light on chemicals
 * Aerobiology, a branch of biology that studies organic particles, such as bacteria, fungal spores, very small insects and pollen, which are passively transported by the air.
 * Aerology, the study of the atmosphere
 * Aetiology, the medical study of the causation of disease
 * Agnoiology, the study of things of which we are by nature ignorant, or of things which cannot be known
 * Agrobiology, the study of plant nutrition and growth in relation to soil conditions
 * Agrology
 * Canada: the art and science of agriculture
 * Non-Canada: the study of soils
 * Agrostology, the study of grasses
 * Algology, the study of algae
 * Allergology, the study of the causes and treatment of allergies; a branch of medicine
 * Andrology, the study of male health and disease
 * Anesthesiology, the study of anesthesia and anesthetics; a branch of medicine
 * Angelology, the study of angels
 * Angiology, the study of the anatomy of blood and lymph vascular systems
 * Anthropology, the study of humans
 * Apiology, the study of bees (apiaries)
 * Arachnology, the study of spiders and their kind
 * Archaeology, the study of past cultures through the analysis of material remains
 * Archaeozoology, the study of relationships between humans and animals over time through examination of animal remains at archaeological sites (also see Zooarchaeology)
 * Areology, the study of Mars
 * Assyriology, the study of the Assyrians
 * Astacology, the study of crayfish
 * Asteroseismology, the study of the internal structures of stars as revealed by their oscillations (see also Helioseismology).
 * Astrobiology, the study of origin of life
 * Astrogeology, the study of geology of celestial bodies (e.g., planets, asteroids, comets)
 * Astrology, the study of the purported influence(s) of celestial bodies on earthly affairs
 * Astrometeorology: using astrology to forecast the weather
 * Atmology, the study of the laws and phenomena of aqueous vapors
 * Audiology, the study of hearing; a branch of medicine
 * Autecology|, the study of the ecology of any individual species
 * Autology, the attribute (of a word) of being self descriptive. The word "polysyllabic" is autological because it is polysyllabic. (compare heterology)
 * Auxology, the study of human growth.
 * Axiology, the study of the nature of values and value judgements

B

 * Bacteriology, the study of bacteria
 * Balneology, the scientific study of baths, bathing and of their application to disease
 * Batology, the study of blackberries
 * Bibliology, the study of books, printing, and publishing; also called Bibliography
 * Bioclimatology, the study of the effects of climate on living organisms
 * Biogeomorphology, or ecogeomorphology, the study of interactions between organisms and geomorphological processes
 * Bioecology, the study of the relationship of organisms to each other and to their environment
 * Biology, the study of life
 * Biometeorology, the study of the effects of atmospheric conditions on living organisms
 * Biotechnology industrial use of living organisms or their components to improve human health and food reduction
 * Boxology is the study of schematic layouts, for example of corporate org charts
 * Bryology, the study of bryophytes
 * Bryozoology, the study of the phylum Bryozoa
 * Buddhology, the study of the nature of Buddha

C

 * Campanology, the study and the art of bell ringing
 * Cardiology, the study of the heart
 * Cariology, the study of cells
 * Cereology, the study of crop circles
 * Cetology, the study of cetaceans - whales, dolphins, and porpoise
 * Characterology, the study of character
 * Christology, the theological study of redemption (christos > christein: to sacrament), not only speaking of Christianity but also extended to religion in general
 * Chorology, the study of the relationship of biological or other phenomena to their locations
 * Chronology the study of things in order of time or the study of time
 * Climatology, the study of the climate
 * Codicology, the study of the preparation of books and manuscripts (ink, paper, vellum etc)
 * Coleopterology, the study of beetles
 * Coniology, the study of dust in the atmosphere and its effects on plants and animals, also spelled "koniology"
 * Conchology, the study of shells and of molluscs
 * Contrology|, a neologism for the Pilates method, a system of physical exercise
 * Cosmology, the study of the cosmos or our place in it
 * Cosmetology, the study of cosmetics and their use
 * Craniology, the study of the characteristics of the skull
 * Criminology, the scientific study of crime
 * Cryology, the study of very low temperatures and related phenomena.
 * Cryptology, the study of how to encrypt and decrypt secret messages
 * Cryptozoology, the study of animals that may or may not be mythical
 * Cynology, the study of dogs
 * Cytomorphology, the study of the structure of cells
 * Cytology, the study of cells

D

 * Deltiology, the study of, but more often the collecting of picture postcards
 * Demonology, the study of demons
 * Dendrochronology, the study of the age of trees and the records in their rings
 * Dendrology, the study of trees
 * Deontology, in ethics, the study of duty.
 * Dermatology, the field of medicine that deals with the skin
 * Dermatopathology, the field of dermatological anatomical pathology
 * Desmology, the study of ligaments
 * Dialectology, the study of dialects
 * Dipterology, the study of flies

E

 * Ecclesiology, the study of Church architecture and decoration, or separately the study of the Christian Church
 * Ecogeomorphology, or Biogeomorphology, the study of interactions between organisms and geomorphological processes
 * Ecohydrology, the study of interactions among organisms and the water cycle.
 * Ecology, the study of the interrelationships between living organisms and their environment; sometimes spelled "œcology"
 * Economic geology is concerned with earth materials that can be utilized for economic and/or industrial purposes.
 * Ecophysiology, the study of the interrelationship between an organism's physical functioning and its environment
 * Edaphology, a branch of soil science that studies the influence of soil on life.
 * Egyptology, the study of the ancient Egyptians
 * Electrophysiology, the study of the relationship between electric phenomena and bodily processes
 * Embryology, the study of embryos
 * Emetology, the study or knowledge of emetics
 * Endocrinology, the study of internal secretory glands
 * Enigmatology, the study of puzzles
 * Enology (or Oenology), the study of wine and winemaking
 * Entomology, the study of insects
 * Enzymology, the study of enzymes
 * Epidemiology, the study of the origin and spread of diseases
 * Epistemology, the study of the nature and origins of knowledge
 * Escapology, the practice of escaping from restraints or other traps.
 * Eschatology, a branch of theology concerned with the final events in the history of the world or of mankind
 * Ethnology, the study of race
 * Ethnomusicology, the study of music in society, usually non-western music
 * Ethology, the study of animal behaviour
 * Etiology, same as Aetiology
 * Etymology, the study of word origins
 * Eulogy, the speech of praise
 * Evolutionary biology, the study of the process of biological evolution
 * Evolutionary psychology, the study of the process of (usually) human psychological evolution.
 * Exobiology, the study of life in outer space

F

 * Felinology, the study of cats
 * Fetology, the study of the fetus, especially when within the uterus. Sometimes spelled foetology.
 * Formicology, the study of ants
 * Fungology, fungus + -ology, see mycology.
 * Futurology, the study of the future

G

 * Garbology - study of refuse and trash
 * Gastrology or Gastroenterology - diseases of stomach and intestines
 * Gemmology or Gemology, the study of gemstones and ornamental materials
 * Genealogy (commonly misspelled and mispronounced as "geneology"), the study of relationships within families particularly with a view to constructing family trees
 * Genecology, the study of genetic differences in relation to the environment
 * Geobiology, the study of the biosphere and its relations to the lithosphere and atmosphere.
 * Geochronology, the study of the age of the Earth
 * Geology, the study of the Earth
 * Geomorphology, the study of present-day landforms, traditionally on Earth but with increasing frequency on nearby planetary objects
 * Gerontology, the study of old age
 * Glaciology, the study of glaciers
 * Grammatology, the study of writing systems. Also the study of deconstructive literary criticism, popularized in the 1960s by Jacques Derrida
 * Graphology, the study of handwriting for the purpose of analysing the character of the writer
 * Grossology, the study of gross and disgusting things. Fictional; book title
 * Gynaecology or Gynecology, the study of medicine relating to women, or of women in general

H

 * Hematology/Haematology, the study of blood
 * Heliology, the study of the Sun
 * Helioseismology, the study of vibrations and oscillations in the Sun
 * Helminthology, the study of parasitic worms. See Vermeology.
 * Hepatology, the study of the liver; a branch of medicine
 * Herbology, the study of the therapeutic use of plants
 * Herpetology, the study of reptiles and amphibians
 * Heterology, the attribute (of a word) of not being self descriptive. The word "monosyllabic" is heterological because it is not monosyllabic. (compare autology)
 * Heteroptology, the study of true bugs
 * Hieroglyphology, Egyptian hieroglyphics, an ancient writing system
 * Hierographology, the study of sacred texts
 * Hierology, a more inclusive term for theology
 * Hippology, study of horses
 * Histology, the study of living tissues
 * Histopathology, the study of the (microscopic) structure of diseased tissue|s
 * Historiology, the study of the writings and practices of historians
 * Homology, concept in anthropology, biology, algebraic topology, and sociology, meaning "likeness in structure"
 * Horology, the study of making timepieces, measuring time and timekeeping (also the study of time)
 * Hydrogeology, the study of underground water
 * Hydrology, the study of water
 * Hypnology, the study of sleep (also: somnology)

I

 * Ichnology, the study of fossil footprints, tracks and burrows
 * Ichthyology, the study of fish
 * Ideology, the study of ideas throughout society both socially,politically,historically and literary
 * Immunology, the study of the immune system
 * Indology, the study of the history, languages, and cultures of the Indian subcontinent
 * Iranology, the study of history, literature, art and culture of Iran (Persia)
 * Islamology, the study of the Islam

J

 * Japanology, the study of Japanese people

K

 * Karyology, the study of karyotypes (a branch of cytology)
 * Killology, the study of human beings killing other human beings (Grossman's theory)
 * Kinesiology, the study of movement in relation to human anatomy; a branch of medicine
 * Kremlinology, the study of the Soviet Union
 * Kymatology, the study of waves or wave motions

L

 * Laryngology, the study of the larynx, or voice box; a branch of medicine
 * Lepidopterology, the study of butterflies and moths
 * Lexicology, the study of the signification and application of words
 * Limnology, the study of freshwater environments, particularly lakes
 * Lithology, the study of rocks
 * Ludology, the study of video games
 * Lymphology, the study of the lymph system and glands

M

 * Malacology, the study of mollusks
 * Mammalogy, the study of mammals
 * Mereology, a branch of logic focusing on the study of part-whole relationships
 * Meteorology, the study of weather
 * Methodology, (properly) the study of methods
 * Metrology, the study of measurement
 * Microbiology, the study of microorganisms.
 * Micrology, the science of preparing and handling microscopic objects for study.
 * Mineralogy, the study of minerals
 * Mixology, the study or skill of preparing mixed drinks.
 * Molinology, the study of windmills, watermills and animal engines.
 * Monadology, a book by Leibniz on the study of his theory of monads.
 * Morphology, the study of forms that is used in several other fields (biology, linguistics, astronomy, etc.)
 * Museology, the study of museum management.
 * Musicology, the study of music
 * Mycology, the study of fungi
 * Myology the scientific study of muscles
 * Myrmecology, the study of ants
 * Mythology, the study of myths

N

 * Nanotechnology, the study and design of machines at the molecular level
 * Nanotribology, the study of friction at very small (atomic) scale
 * Nematology, the study of nematodes
 * Neonatology, the study of diseases and the care of newborn infants; a branch of pediatrics/paediatrics
 * Nephology, the study of clouds
 * Nephrology, the study of the kidneys and their diseases, a branch of medicine
 * Neurology, the study of nerves
 * Neuropathology, the study of neural diseases
 * Neurophysiology, the study of the functions of the nervous system
 * Nosology, the study of disease classification
 * Numerology, the study of numbers (often in a non-mathematical sense)
 * Nutriology, the study of nutrition

O

 * Oceanology, the study of oceans
 * Odonatology, the study of dragonflies and damselflies
 * Odontology, the study of the structure, development, and abnormalities of the teeth
 * Oenology, the study of wine
 * Omnology, the study of everything
 * Oncology, the study of cancer
 * Oneirology, the study of dreams
 * Onomatology, the study of proper names
 * Ontology, the study of existence
 * Oology, the study of eggs
 * Ophthalmology, the study of the eyes
 * Organology, the study of musical instruments (not just organs); alternatively, the study of anatomical organs
 * Ornithology, the study of birds
 * Orology, the study of mountains and their mapping
 * Orthopterology, the study of grasshoppers and crickets
 * Osteology, the study of bones
 * Otolaryngology, the study of the ear and throat; a branch of medicine
 * Otology, the study of the structure, function, and pathology of the ear
 * Otorhinolaryngology, the same as otolaryngology

P

 * Paleoanthropology, the study of prehistoric people and human origins
 * Paleobiology, the study of prehistoric life
 * Paleobotany, the study of prehistoric metaphytes (i.e., multicellular plants)
 * Paleoclimatology, the study of prehistoric climates
 * Paleoecology, the study of prehistoric environments by analyzing fossils and rock strata
 * Paleontology, the study of fossils of ancient life
 * Paleophytology (see "paleobotany"), the study of ancient multi-celled plants
 * Paleozoology, the study of prehistoric metazoans (i.e., multicellular animals)
 * Palynology, the study of pollen
 * Parasitology, the study of parasites
 * Pathology, the study of illness
 * Pedology, one of two main branches of soil science
 * Pedology
 * Penology, the study of prison management and criminal rehabilitation
 * Personology, a variant of physiognomy
 * Petrology, the study of rocks and the conditions by which they form
 * Pharmacology, the study of drugs
 * Phenology, the study of periodic biological phenomena such as flowering, migration, breeding, etc.
 * Phenomenology, the study and science of phenomena as distinct from the science of actual existence or being; also a movement founded by Husserl which studies conscious experience without its metaphysical concerns
 * Philology, the study of a language together with its literature
 * Phlebology, a branch of medicine that deals with the venous system
 * Phonology, the study of vocal sounds
 * Phrenology, the derivation of a person's character traits, by studying the shape of their skull
 * Phycology, the study of algae
 * Physiology, the study of mechanical, physical, and biochemical functions of living organisms
 * Phytology, the study of plants; botany
 * Phytopathology ("Plant pathology"), the study of plant diseases
 * Phytosociology, the study of the ecology of plant communities
 * Piphilology, the mnemonic practice of writing sentences such that the numbers of letters in the words correspond to the consecutive digits of pi
 * Planetology, the study of planets and solar systems; more commonly called Planetary science
 * Planktology, the study of plankton
 * Pneumology, a synonym of Pulmonology
 * Pomology, the scientific study and cultivation of fruits
 * Posology, the study of drug dosage
 * Primatology, the study of primates
 * Proctology, the study of the hind regions (rectum, anus, colon and pelvic floor) of the body
 * Psephology, the study, especially statistical, of elections.
 * Psychobiology, the study and psychology of organisms with regard to their functions and structures
 * Psychology, the study of mental processes in living creatures
 * Psychopathology, the study of the mental processes within mental illness or disorders
 * Psychopharmacology, the study of psychotropic or psychiatric drugs
 * Psychophysiology, the study of the physiological bases of psychological processes
 * Pulmonology, the specialty in medicine that deals with diseases of the lungs and the respiratory tract

R

 * Radiology, the study of rays, usually ionising radiation
 * Redology, the study of the classical Chinese literary masterpiece Dream of the Red Chamber
 * Reflexology, originally the study of reflexes or of reflex responses; but see also non-study list
 * Rheology, the study of flow
 * Rheumatology, the study of rheumatic diseases, a branch of medicine
 * Rhinology, the study of the nose and its diseases
 * Ripperology, the study of Jack the Ripper and the crimes associated with him

S

 * Sarcology, a subsection of anatomy that studies the soft parts; includes myology, angiology, neurology, and splanchnology
 * Scatology, the study of feces
 * Scientology, the applied religious philosophy created by American writer L. Ron Hubbard
 * Sedimentology, a branch of geology that studies sediments
 * Seismology, the study of earthquakes
 * Selenology, the study of the moon
 * Semiology, the study of signs
 * Semitology, the study of Semitic cultures
 * Serology, the study of blood serum
 * Serpentology, the study of snakes
 * Sexology, the study of sex
 * Sindonology, the study of the Shroud of Turin
 * Sinology, the study of China
 * Sitiology, dietetics, the study of diet; also, a treatise on diet; also spelled "sitology"
 * Sociology, the study of society
 * Sociobiology, the study of the effect of evolution on ethology
 * Somnology, the study of sleep, also: hypnology
 * Somatology, study of human characteristics
 * Soteriology the study of the doctrine of salvation, especially as related to Christianity
 * Sovietology, the study of communist Soviet Union
 * Speleology, the study or exploration of caves
 * Sporalogy, a parody of astrology
 * Stemmatology, a discipline that attempts to reconstruct the transmission of a text (especially a text in manuscript form) on the basis of relations between the various surviving manuscripts
 * Stomatology, study of the mouth and its diseases.
 * Sumerology, the study of the Sumerians.
 * Symbology, the study and interpretation of symbols, or a set of symbols. Also used for types of barcodes
 * Symptomatology, the study of symptoms
 * Synecology|, the study of the ecological interrelationships among communities of organisms
 * Syphilology, the study of syphilis

T

 * Taxology, a synonym for taxonomy
 * Technology, the study of the practical arts (but see above)
 * Teleology, the study of ends or final causes
 * Teratology, the study of wonders, or monsters
 * Terminology, the usage and study of terms.
 * Thanatology, the study of physical, psychological and social problems associated with dying.
 * Thermology, the study of heat.
 * Theology, the study in religion
 * Tibetology, the study of Tibet
 * Tocology, the study of childbirth, sometimes spelled "tokology".
 * Tonology, the study of intonation in speech
 * Topology, the mathematical study of closeness and connectedness
 * Toxicology, the study of poisons
 * Traumatology, the study of wounds and injuries caused by accidents or assaults and their surgical treatment and repair; a branch of medicine
 * Tribology, the study of friction and lubrication
 * Trichology, the study of hair and scalp
 * Typology, the study of classification

U

 * Urology, the study and treatment of diseases of the urogenital tract, a branch of medicine. Sometimes spelled "ourology".
 * Ufology, the study of Unidentified flying object (UFO) phenomena.

V

 * Vaccinology, the study of vaccines
 * Venereology, the study of venereal diseases
 * Vexillology, the study of flags
 * Victimology, the study of victims of crime, often applied to characterizing the criminal
 * Virology, the study of viruses
 * Volcanology (also spelled vulcanology), the study of volcanoes and related phenomena (traps)

X

 * Xenobiology, the study of non-terrestrial life
 * Xylology, the study of wood

Z

 * Zooarchaeology, the study and analysis of animal remains at archaeological sites to reconstruct relationships between people, animals, and their environment (also see Archaeozoology)
 * Zoology, the study of animals
 * Zoopathology ("Animal pathology"), the study of animal diseases
 * Zymology, the study of fermentation

Ologies that are not fields of study
Words ending in -ology that are not fields of study, and thus not "ologies" in the sense of this article, are:
 * Anthology, a collection of literary pieces (such as poems).
 * Apology
 * a statement of regret.
 * an explanation for or justification of beliefs.
 * Arcology - enormous habitat (hyperstructure) of extremely high human population density.
 * Chronology is the arrangement or setting out of past events in order of occurrence; the recording of historical events in date sequence.
 * Dilogy is
 * ambiguous or equivocal speech, or
 * a work composed in two parts (see trilogy)
 * Docimology, a treatise on the art of testing, e.g. in assaying metals.
 * Doxology, a spoken or sung end of a prayer.
 * Eulogy, though not an -ology, is a commemoration of a person's life at his/her funeral.
 * Hagiology is literature dealing with the life of a saints|saint or, indeed, any revered person, a biography of an individual, rather than a study of saints, sainthood or saintliness in general.
 * Heterology, a dissimilarity of parts often attributable to a difference in origin.
 * Homology (biology)|Homology, a similarity often attributable to common origin
 * Ideology, sometimes spelled idealogy, is a system of ideas about politics, human life or culture.
 * Kibology, joke religion worshiping Kibo.
 * Menology, a register of months, or a calendar of the lives of the saints for each day of the year.
 * Necrology, a list of people who have died, especially in the recent past or during a specific period.
 * Philology, the historical study of languages. This is not a ology in the strict sense, because it is not the study (-ologia) of love (philo-), but the love (philo-) of literature (logia).
 * Phraseology is the way words are put together, therefore the style guide|style being used in a Sentence (linguistics)|sentence, or the set of phrases or the choice of words used by any particular group of people, or a type of register (linguistics)|register that reflects the form of language used in a certain social situation in which particular subjects are being discussed.
 * Piphilology seems to be a borderline case with some aspects of a field of study, but not a scientific discipline.
 * Reflexology, alternative method of massage, manipulative therapy|therapy or pressure on certain points of the sole of the feet as a means of relieving nervous tension.
 * Scientology, the belief system/cult religion founded by L. Ron Hubbard, self-described as a study of knowledge.
 * Tautology (logic)|Tautology, a self-affirming truth.
 * Terminology, a set of words and/or phrases, usually in relation to some particular canon or field of study e.g. 'mathematical terminology'.
 * Tetralogy of Fallot, an abnormality of the heart consisting of four deformities that often occur together.
 * Trilogy (although not strictly an -ology) is a body of writing in three parts, as tetralogy is that in four parts. Other words such as pentalogy, hexalogy, and heptalogy or septology cover larger series.
 * Tropology, the use of tropes in speech or writing.
 * A Zumology is a treatise on the fermentation of liquors.