List of various "Ologies"
| Acarology | Mites and ticks |
| Aceolgy | Therapeutics |
| Acology | Medical remidies |
| Adenology | Glands |
| Aedoeology | Generative organs. |
| Aerobiology | Airborne organisms. |
| Aerolithology | Aerolites, meteorites. |
| Aerology | Atmosphere, Air flow |
| Aetiology | Causes, especially of disease |
| Agriology | Primitive peoples |
| Agrobiology | Plant nutrition, soil yields |
| Agrology | Agricultural soils |
| Agrostology | Grasses |
| Alethiology | Truth |
| Algology | Algae |
| Anaesthesiology | Anaesthetics |
| Andragogy | Teaching adults |
| Anemology | Wind |
| Angelology | Angels |
| Angiology | Blood and lymph vessels |
| Anthropobiology | Human biology |
| Anthropology | Mankind |
| Aphnology | Wealth |
| Apiology | Bees |
| Arachnology | Spiders |
| Archaeology | Ancient peoples |
| Archelogy | First principles |
| Archology | Origins of government |
| Areology | Mars |
| Aristology | Dining |
| Arthrology | Joints |
| Astacology | Crayfish |
| Astheniology | Diseases and aging |
| Astrogeology | Extraterrestial geology |
| Astrology | Influence of star movements |
| Astrometeorology | Effect of stars on climate |
| Astroseismology | Star oscillations |
| Atmology | Aqueous vapour |
| Audiology | Sound and hearing |
| Autecology | Ecology of one species |
| Autology | Oneself |
| Auxology | Growth |
| Axiology | Principles |
| Bacteriology | Bacteria |
| Balneology | Natural and medicinal baths |
| Barology | Gravitation |
| Batology | Brambles |
| Bibliology | Books |
| Bioecology | Interaction of life in the environment |
| Biology | Living organisms |
| Bromatology | Food |
| Brontology | Thunder |
| Bryology | Mosses |
| Caliology | Bird's nests |
| Campanology | Bells |
| Carcinology | Crabs and crustaceans |
| Cardiology | Heart function and disease |
| Caricology | Sedges |
| Carpology | Fruit and seeds |
| Cartology | Maps and Map-making |
| Cetology | Aquatic mammals, especially whales |
| Chaology | Chaos theory |
| Characterology | Development of character |
| Chirology | Hands |
| Chorology | Geographical regions |
| Chronobiology | Biological rhythms |
| Chronology | Dates |
| Chrysology | Precios metals |
| Climatology | Climate |
| Clinology | Aging |
| Codicology | Manuscripts |
| Coleopterology | Beetles and weevils |
| Cometology | Comets |
| Conchology | Seashells |
| Coprology | Pornography |
| Cosmetology | Cosmetics |
| Cosmology | Theory of the universe |
| Craniology | Skulls |
| Criminology | Crime and criminals |
| Cryobiology | Life in cold conditions |
| Cryptology | Codes and ciphers |
| Ctetology | Inheritance of characteristics |
| Cytology | Plant and animal cells |
| Dactyliology | Rings |
| Dactylology | Sign language |
| Deltiology | Picture postcards |
| Demology | Human behaviour |
| Demonology | Beliefs of demons |
| Dendrochronology | Age of trees by rings |
| Dendrology | Trees |
| Deontology | Moral responsibilities |
| Dermatology | Skin and related diseases |
| Desmology | Ligaments |
| Diabology | Devils |
| Dialectology | Dialect |
| Diplomatology | Diplomats |
| Docimology | Assaying |
| Dosiology | Doses |
| Dysteleology | Purposeless organs |
| Ecclesiology | Church affairs |
| Eccrinology | Excretion |
| Ecology | Life's relationship to environment |
| Edaphology | Soils |
| Egyptology | Ancient Egypt |
| Electrology | Electricity |
| Embryology | Embryos |
| Emetology | Vomiting |
| Emmenology | Menstruation |
| Endemiology | Local diseases |
| Endocrinology | Glands |
| Enigmatology | Enigmas |
| Entomology | Insects |
| Entozoology | Parasites |
| Enzymology | Enzymes |
| Epidemiology | Incidence and risk of disease |
| Epistemology | Grounds of knowledge |
| Eremology | Deserts |
| Ergology | Effects of work on humans |
| Escapology | Escape from confinement |
| Eschatology | Death and the afterlife |
| Ethnobiology | Kinds of People |
| Ethnology | Cultures |
| Ethology | Animal behaviour |
| Ethnomethodology | Everyday communication |
| Ethnomusicology | Comparative musical systems |
| Ethology | Natural or biological character |
| Etiology | Causes/ Reasons |
| Etymology | Origin of words |
| Exobiology | Extraterrestial life |
| Fluviology | Watercourses |
| Futurology | The future |
| Garbology | Garbage |
| Gastroenterology | The stomach |
| Gastrology | Gasses |
| Gemnology | Gems and jewels |
| Genealogy | Ancestry |
| Genesiology | Repreduction and heredity |
| Genethlialogy | Casting horoscopes |
| Geochronology | Measuring geological time |
| Geogony | Formation of the Earth |
| Geology | Earth's crust and strata |
| Geratology | Decadence and decay |
| Gerontology | Ageing |
| Gigantology | Giants |
| Glaciology | Ice ages and glaciation |
| Glossology | Language and the tongue |
| Glottochronology | History of language |
| Glyptology | Gem engravings |
| Gnosiology | Knowledge |
| Gnotobiology | Life in germ-free environments |
| Graminology | Grasses |
| Grammatology | Writing systems |
| Graphology | Handwriting |
| Gynaecology | Women |
| Haematology | Blood |
| Hagiology | Saints |
| Hamartiology | Sin |
| Helcology | Ulcers |
| Heliology | The Sun |
| Helminthology | Worms, especially parasitic |
| Heortology | Religious feasts |
| Hepatology | Livers |
| Heresiology | Heresies |
| Herpetology | Reptiles and amphibians |
| Hierology | Sacred matters |
| Hippology | Horses |
| Histology | Organic tissue |
| Historiology | Writing history |
| Homology | Relation / Correspondence |
| Hoplology | Weapons |
| Horology | Clocks and time measuring |
| Hydrobiology | Aquatic organisms |
| Hydrogeology | Ground water |
| Hydrology | Water |
| Hydrometeorology | Aymospheric moisture |
| Hyetology | Rainfall |
| Hygiology | Cleanliness, hygiene |
| Hygrology | Humidity |
| Hymnology | Hymns |
| Hypnology | Sleep, hypnosis |
| Iamatology | Remedies |
| Ichnology | Fossilised footprints |
| Ichthyology | Fish |
| Iconology | Icons, symbols |
| Ideology | Ideas |
| Idionology | Idiom, dialect, jargon |
| Immunology | Immunity |
| Immunopathology | Immunity to disease |
| Insectology | Insects |
| Irenology | Peace |
| Iridology | Iris |
| Kalology | Beauty |
| Karyology | Cell nuclei |
| Kidology | Kidding |
| Kinesiology | Human movement and posture |
| Koniology | Atmospheric pollutants and dust |
| Ktenology | Putting people to death |
| Kymatology | Wave motion |
| Laryngology | Larynx |
| Lepidopterology | Butterflies and moths |
| Leprology | Leprosy |
| Lexicology | Vocabulary / Words |
| Lichenology | Lichens |
| Limacology | Slugs |
| Limnobiology | Freshwater ecosystems |
| Limnology | Freshwater |
| Lithology | Characteristics of rocks |
| Liturgiology | Church rituals |
| Loimology | Plagues and epidemics |
| Malacology | Molluses |
| Malariology | Malaria |
| Mammalogy | Mammals |
| Mariology | The Virgin Mary |
| Martyrology | Martyrs |
| Mastology | Mammals |
| Meconology | Opium |
| Melittology | Bees |
| Mereology | Part-whole relationships |
| Mesology | Ecology |
| Metaphychology | Nature of the mind |
| Meteorology | Weather |
| Methodology | Order |
| Metrology | Weights and measures |
| Microanatomy | Microscopic tissues |
| Microbiology | Micro-organisms |
| Microclimatology | Local climates |
| Micrology | Trivialities |
| Micropalaeontology | Microscopic fossils |
| Microphytology | Very small plant life |
| Mineralogy | Minerals |
| Molinology | Milling and mills |
| Momology | Mummies |
| Morphology | Forms and structures |
| Muscology | Mosses |
| Museology | Museums |
| Musicology | History of music |
| Mycology | Fungi |
| Myology | Muscles |
| Myrmecology | Ants |
| Mythology | Myths, fables |
| Naology | Church architecture |
| Nasology | The nose |
| Nematology | Nematodes |
| Neology | New words |
| Neonatology | Newborn babies |
| Neossology | Nestling birds |
| Nephology | Clouds |
| Nephrology | Kidneys |
| Neurobiology | Anatomy of nerbous sysytem |
| Neurology | Nerve systems |
| Neuropsychology | Relation between brain and behaviour |
| Neurypnology | Hypnotism |
| Nidology | Nests |
| Nomology | Law-making / Scientific laws |
| Noology | Intellect |
| Nosology | Classification of diseases |
| Nostology | Senility |
| Numerology | Occult significance of numbers |
| Nymphology | Nymphs |
| Oceanology | Oceans |
| Odology | Mystic force "od" |
| Odontology | Teeth |
| Oenology | Wines |
| Oikology | Housekeeping |
| Olfactology | Sense of smell |
| Ombrology | Rain |
| Oncology | Tumours |
| Oneirology | Dreams |
| Onomasiology | Nomenclature |
| Ontology | Nature of being |
| Oology | Eggs |
| Ophiology | Snakes |
| Opthalmology | Eyes |
| Optology | Sight |
| Orchidology | Orchids |
| Ornithology | Birds |
| Orology | Mountains |
| Orthopterology | Cockroaches |
| Oryctology | Minerals |
| Osmology | Olfactory processes |
| Osphresiology | Sense of smell |
| Osteology | Bones |
| Otology | Ears |
| Otorhinolaryngology | Ear, nose and throat |
| Paedology | Children |
| Paedonosology | Children's diseases |
| Palaeoanthropology | Ancient human life |
| Palaeobiology | Ancient plant and animal life |
| Palaeclimatology | Ancient climates |
| Palaeolimnology | Ancient fish and lakes |
| Palaeontology | Life through fossils |
| Palaeopedology | Early soils |
| Palaeozoology | Ancient animals |
| Palaeoostereology | Ancient bones |
| Palynology | Pollen |
| Papyrology | Paper |
| Parapsychology | Unexplained mental phenomena |
| Parasitology | Parasites |
| Paroemiology | Proverbs |
| Parthenology | Virgins |
| Pathology | Disease |
| Patrology | Early Christianity |
| Pedology | Soils |
| Pelology | Mud |
| Penology | Punishment of crime / Prisons |
| Pestology | Pests |
| Petrology | Rocks/ Petrolium |
| Phantomology | Supernatural Beings |
| Pharmacology | Action of drugs on the body |
| Pharology | Lighthouses |
| Pharyngology | Throat |
| Phenology | Organisms affected by climate |
| Phenomenology | Phenomena |
| Philematology | Kissing |
| Philology | Historical languages |
| Phonology | Sounds in speech |
| Photobiology | Effect of light on organisms |
| Phraseology | Phrases |
| Phrenology | External cranial form |
| Phycology | Algae and seaweeds |
| Physiology | Functioning of living organisms |
| Phytology | Plants |
| Phytosociology | Characteristics of plants |
| Piscatology | Fishes |
| Pisteology | Faith |
| Planetology | Planets |
| Plutology | Political economy |
| Podology | Feet |
| Polemology | Wars |
| Pomology | Fruit growing |
| Posology | Quantity or dosage |
| Potamology | Rivers |
| Praxeology | Efficient actions |
| Primatology | Primates |
| Proctology | Rectum |
| Protistology | Protista |
| Protozoology | Single-celled animals |
| Psephology | Elections |
| Pseudology | Lying |
| Psychobiology | Biology of the mind |
| Psychology | Human mind |
| Psychopathology | Psychopath behaviour |
| Pteridology | Ferns |
| Pterylology | Distribution of bird feathers |
| Pyretology | Fevers |
| Pyrgology | Towers |
| Pyroballogy | Artillery |
| Pyrology | Fire |
| Quinology | Quinine |
| Raciology | Racial differences |
| Radiology | High-energy radiation |
| Reflexology | Reflexes, Healing through massage |
| Rhabdology | Calculating using numbering rods |
| Rheology | Deformation or flow of matter |
| Rheumatology | Rheumatism |
| Rhinology | Noses |
| Runology | Runes |
| Sarcology | Fleshy body parts |
| Satanology | The devil |
| Scatology | Excrement, obscene language |
| Sedimentology | Sediments |
| Seismology | Earthquakes |
| Selenology | The Moon |
| Semantology | Meanings of words |
| Semasiology | Meaning, semantics |
| Semiology | Signs and signalling |
| Serology | Serums |
| Sexology | Sexual behaviour |
| Sindonology | Shroud of Turin |
| Sinology | China |
| Sitology | Dietetics |
| Sociobiology | Biological basis of human behaviour |
| Sociology | Society |
| Somatology | Properties of matter |
| Sophiology | Ideas |
| Soteriology | Theological salvation |
| Spectrology | Ghosts |
| Speleology | Caves |
| Spermology | Seeds |
| Sphagnology | Peat moss |
| Sphygmology | Pulse |
| Splanchnology | Entrails or viscera |
| Spongology | Sponges |
| Stasiology | Political parties |
| Stemmatology | Relationships between texts |
| Stoichiology | Elemets of animal tissues |
| Stomatology | Mouth disorders |
| Storiology | Legends and stories |
| Suicidology | Suicide |
| Symbology | Symbols |
| Symptomatology | Symptoms of illness |
| Synecology | Ecoligical communities |
| Syphilology | Syphilis |
| Systematology | Systems |
| Technology | Mechanical arts |
| Tegestology | Beer mats |
| Teleology | Final causes |
| Telmatology | Swamps |
| Teratology | Monsters / Congenital abnormalities |
| Teuthology | Cephalopods |
| Textology | Production of texts |
| Thanatology | Death and its customs |
| Thaumatology | Miracles |
| Theology | Religion |
| Theriogenology | Animal reproductive systems |
| Thermology | Heat |
| Therology | Wild mammals |
| Thremmatology | Breeding domestic animals and plants |
| Threpsology | Nutrition |
| Tidology | Tides |
| Timbrology | Postage stamps |
| Tocology | Obstrectics, midwifery |
| Topology | Regional surface features |
| Toxicology | Poisons |
| Traumatology | Wounds and their effects |
| Tribology | Friction and lubrication |
| Trichology | Hair |
| Trophology | Nutrition |
| Tsiganology | Gypsies |
| Typhlology | Blindness |
| Typology | Appearance of printed matter |
| Ufology | Unidentified Flying Objects |
| Uranology | The heavens |
| Urbanology | Cities |
| Urenology | Rust molds |
| Urology | Urinary tract |
| Venereology | Venereal disease |
| Vermeology | Worms |
| Vexillology | Flags |
| Victimology | Victims |
| Vinology | Vines and winemaking |
| Virology | Viruses |
| Vulcanology | Volcanoes |
| Xylology | Wood |
| Zoology | Animals |
| Zoopathology | Animal diseases |
| Zoophysiology | Physiology of animals |
| Zoophytology | Plant-like animals |
| Zygology | Joining and fastening |
| Zymology | Fermentation |
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