| Actinobiology | Effects of radiation upon living organisms. |
| Anthropology | Study of Natives. |
| Allergology | Study of allergies. |
| Anthology | Study of Literary Pieces. |
| Agrostology | Study of Grasses. |
| Auteecology | Study of Ecology. |
| Audiology | Study of Hearing. |
| Acoustics | Study of Sound. |
| Astronautics | Science of Space Travel. |
| Archaeology | Study of Historical Places. |
| Archnology | Study of Spiders. |
| Aerodynamics | Study of dynamics of gases. |
| Aeronautics | Study of Aerial Locomotion. |
| Aeriology | Science of Causation. |
| Agrobiology | Science of Plant Life & Nutrition. |
| Agrology | Branch of Soil Science. |
| Agronomy | Science of Soil Management. |
| Anatomy | Study of Structure of living bodies. |
| Anaesthesiology | Branch of Medicine on Anaesthetics. |
| Aerology | Study of Air.The branch of meteorology involving the observation of the atmosphere by means of balloons, airplanes, etc. |
| Bacteriology | Study of Bacteria. |
| Bioclimatology | Study of Climate on living organisms. |
| Bionics | Investigation of semory of perception of birds. |
| Bryology | Study of Mosses. |
| Biology | Study of living beings. |
| Botany | Study of Plants. |
| Biophysics | Physics of vital processes of living organisms. |
| Chemistry | Study of elements, combinations and behaviour. |
| Carpology | Study of Fruits and Seeds. |
| Cereaology | Study of Crop cycles. |
| Cryology | Study of Low Temperature. |
| Cynology | Study of Dogs. |
| Conchology | Study of shells. |
| Cryptography | Study of Secret Codes. |
| Cytology | Study of Cells. |
| Cytogenetics | Study of Cell formation. |
| Cosmetology | Study of facial make up. |
| Cosmology | Study of the Universe. |
| Coleopterist | Study of Beetles. |
| Cartography | Study of Maps. |
| Calligraphy | Art of beautiful handwriting. |
| Cacography | Study of bad handwriting. |
| Ceramics | Art of making objects of clay. |
| Cetology | Study of mammals specially whales. |
| Chorology | Study of Geographical areas. |
| Craniology | Study of Skulls. |
| Cryogenetics | Study and Application of Low Temperature. |
| Chocology | Study of Chocalates. |
| Dendrology | Study of Trees. |
| Dendrochronology | Study of dating trees by studying the rings. |
| Dermatology | Study of Skin diseases. |
| Dendronautics | Study or access to climb the tropical forest canopy. |
| Dactyliology | Study of finger prints. |
| Ecology | Study of Environment with organisms. |
| Entomology | Study of insects. |
| Ergonomics | Study of Work and Working Conditions. |
| Epigraphy | Study of inscriptions. |
| Ethology | Study of mental and physical differences of mankind |
| Exonumia | Study of coin like objects. |
| Etymology | Study of Origin of words. |
| Embryology | Study of the development of plants and animals. |
| Enigmatology | Study of Puzzles. |
| Enology | Study of Wine and wine making. |
| Enzymology | Study of Enzymes. |
| Epidemology | Study of Epidemics. |
| Exobiology | Study of the possibilities of life existing beyond earth |
| Epistemology | Study of the nature of knowledge. |
| Eschatology | Study of death and destiny. |
| Foetology | Study of Child in the foetus. |
| Geophysics | Study of the Physics of Earth. |
| Glottochronology | History of language and relationship. |
| Geology | Study of Chemistry of Earth's crust. |
| Genetics | Study of dealing with heredity. |
| Geneaology | Study of family lineage/history |
| Gastroenterology | Study of stomach and intestines. |
| Gerontology | Study of old age. |
| Gemmology | Study of Gems and Stones. |
| Glaciology | Study of Glaciers. |
| Gynaecology | Study of women related diseases. |
| Hydrostatistics | Study of force and pressure of liquid. |
| Hydrodynamics | Study of liquids in motion. |
| Hydrology | Study of water. |
| Haemotology | Study of Blood. |
| Hydrography | Treatment of diseases by water. |
| Hydroponics | Culture of plants without soil only in solutions. |
| Hyetology | Study of rainfall. |
| Herpotology | Study of reptiles and Amphibians. |
| Hymenoptology | Study of wasps, bees and ants. |
| Horology | Study of measuring time or construction of clocks. |
| Hydraulics | Study of flowing liquids. |
| Horticulture | Branch of Agriculture - gardening and landscaping |
| Hagiography | Study of Saints. |
| Ichthyology | Study of fishes. |
| Iconography | Teaching by pictures and models. |
| Immunology | Study of Immune systems. |
| Indology | Study of history, culture, languages, literature of Indian sub-continent countries. |
| Kyamatology | Study of the waves and its motions. |
| Lexicology | Study of vocabulary. |
| Lexicography | Compiling of Dictionary. |
| Lepidoptology | Study of Butterflies and moths. |
| Lythology | Study of rocks. |
| Limnology | Study of lakes. |
| Linguistics | Study of languages. |
| Mineralogy | Study of Minerals. |
| Malacology | Study of Molecules in Zoology |
| Meteorology | Study of Weather. |
| Mammology | Study of Mammals. |
| Mammography | A technique of quicker diagnosis of breast Cancer of women. |
| Mycology | Study of fungi and its diseases. |
| Morphology | Study of external form and structure of living organisms. |
| Metrology | Study of Measures and weights. |
| Microbiology | Study of Microorganisms. |
| Myrmecology | Study of Ants. |
| Metallurgy | Process of extracting metal from ores. |
| Nephology | Study of Clouds. |
| Nephrology | Study of Kidney and its diseases. |
| Neurology | Study of nerves. |
| Neurophysiology | Study of the nervous system. |
| Numerology | Study of numbers and predictions. |
| Numismatics | Study of Coins. |
| Notaphilist | Study of currency and bank notes. |
| Ophiology | Study of snakes. |
| Oenology | Study of wines |
| Ocenology/graphy | Study of oceans. |
| Oncology | Study of Cancer. |
| Oology | Study of Bird eggs. |
| Orology | Study of Mountains. |
| Osteology | Study of bones |
| Odontography | Study of teeth. |
| Ornithology | Study of Birds. |
| Otorhinolaryngology | Study of Ear, Nose and Throat. |
| Phytopathology | Study of Plant Diseases. |
| Potamology | Study of Rivers. |
| Phycology | Study of Algae. |
| Palaeozoology | Study of Animal fossils. |
| Paleoontology | Study of fossils. |
| Pedalogy | Study of soil. |
| Pedagogy | Study of education. |
| Perinatology | Study of disorders of new born that occur in prenatal period. |
| Phrenology | Study of Skull and brains. |
| Philology | Study of languages. |
| Physiography | Study of natural geography. |
| Pomology | Study of Fruits. |
| Petrology | Study of rocks in earth's crust. |
| Psephology | Study of elections and results. |
| Pathology | Study of illness. |
| Penology | Study of prison management. |
| Pharmacology | Study of medicines and drugs. |
| Phonology | Study of vocal sound system. |
| Phytology | Study of Plants - Branch of Botany. |
| Pneumology | Study of Lungs. |
| Pyrology | Study of Fire. |
| Philately | Study of Postage Stamps. |
| Pteridology | Study of Ferns. |
| Parasitology | Study of Parasites/diseases. |
| Phenology | Study of Organism affected by climates. |
| Photobiology | Study of effect of light on organisms. |
| Physiognomy | Judging human character by facial features. |
| Physiology | Study of life processes of various organs of Living organisms. |
| Radiology | Study of rays and radiology |
| Rheumatology | Study of Rheumatic diseases. |
| Rhinology | Study of nose and diseases. |
| Radio Biology | Study of effect of radiation on living organisms. |
| Radio Ecology | Study of Radio Isotopes or ionizing radiation with population. |
| Rheology | Science of flow of matter. |
| Seismology | Study of Earthquakes. |
| Selenology | Study of Moon. |
| Semantics | Study of the meaning of words. |
| Serology | Study of blood serum. |
| Sociology | Study of society. |
| Speleology | Study of caves. |
| Stomatology | Study of Mouth diseases. |
| Spermology | Study of weeds. |
| Sinology | Study of China. |
| Sialogy | Study of Saliva. |
| Semiology | Study of Signs, Sign languages or system of Signaling. |
| Sitology | Study of food, nutrition and diet. |
| Spectrology | Study of Spectres. |
| Teleology | Philosophical study of manifestation of design or purpose in natural processes. |
| Tetratology | Study of abnormal development and congenital malformations. |
| Tribology | Study of Friction. |
| Theology | Study of religion. |
| Trichology | Study of hair. |
| Theriology | Study of mammals. |
| Toxicology | Study of poisons and toxic substances. |
| Traumotology | Study of wound/injury by accident. |
| Urology | Study of urogenital tract. |
| Virology | Study of Virusses. |
| Volcanology | Study of Volcanoes. |
| Venereology | Study of Venereal diseases. |
| Vexillology | Study of Flags. |
| Xylology | Study of woods. |
| Zoology | Study of animals |
| Zymology | Study of Fermentation. |
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