List of Ologies
| Acarology | ticks and mites |
| Actinology | the effect of light on chemicals |
| Aetiology | the medical study of the causation of disease |
| Algology | algae |
| Andrology | male health and disease |
| Anesthesiology | anesthesia and anesthetics |
| Angiology | the anatomy of blood and lymph vascular systems |
| Anthropology | humans |
| Arachnology | spiders and their kin |
| Archaeology | study of past human life |
| Astrology | stars influences on human affairs |
| Audiology | hearing |
| Bacteriology | bacteria |
| Biology | life |
| Campanology | the study and the art of bell ringing |
| Cardiology | the heart |
| Carpology | the structure of seeds and fruit |
| Cerealogy | crop circles |
| Cetology | marine mammals |
| Climatology | the climate |
| Conchology | shells and of molluscs |
| Cosmology | the cosmos or our place in it. |
| Craniology | the characteristics of the skull |
| Criminology | the scientific study of crime. |
| Cryptology | how to encrypt and decrypt secret messages |
| Cryptozoology | animals that may or may not be mythical |
| Cytology | biological cells |
| Demonology | demons |
| Dendrochronology | the age of trees and the records in their rings |
| Dendrology | trees |
| Dermatology | skin |
| Dialectology | dialects |
| Ecclesiology | Church architecture and decoration |
| Ecology | environment |
| Egyptology | the ancient Egyptians |
| Embryology | embryos |
| Endocrinology | hormones |
| Entomology | insects |
| Enzymology | enzymes |
| Epidemiology | epidemics |
| Ethology | animal behaviour |
| Etymology | word origins |
| Gemology | gemstones |
| Geology | the Earth |
| Gerontology | old age |
| Glaciology | glaciers |
| Gynaecology | medicine relating to women |
| Haematology | blood |
| Heliology | the Sun |
| Helminthology | parasitic worms |
| Hepatology | the liver |
| Herbology | the therapeutic use of plants |
| Herpetology | reptiles and amphibians |
| Histology | living tissues |
| Hydrology | water |
| Ichthyology | fish |
| Immunology | the immune system |
| Kinesiology | movement in relation to human anatomy |
| Kymatology | waves or wave motions |
| Limnology | fresh water environments, lakes |
| Lithology | rocks |
| Mammology | mammals |
| Meteorology | weather |
| Metrology | measurement |
| Microbiology | microorganisms and their effects on humans |
| Mineralogy | minerals |
| Mycology | fungi |
| Myology | muscles |
| Myrmecology | ants |
| Mythology | myths |
| Nephology | clouds |
| Nephrology | the kidneys and their diseases |
| Neurology | nerves |
| Neuropathology | neural diseases |
| Neurophysiology | the functions of the nervous system |
| Oceanology | oceans |
| Odonatology | dragonflies and damsel flies |
| Odontology | structure, development and abnormalities of teeth |
| Oenology | wine |
| Omnology | everything |
| Oncology | cancer |
| Oneirology | dreams |
| Onomatology | proper names |
| Ontology | existence |
| Oology | eggs |
| Ophthalmology | the eyes |
| Organology | musical instruments or anatomical organs |
| Ornithology | birds |
| Orology | mountains and their mapping |
| Orthopterology | grasshoppers and crickets |
| Osteology | bones |
| Otolaryngology | ear and throat |
| Otology | the ear |
| Otorhinolaryngology | ear, nose and throat |
| Palaentology | ancient creatures |
| Palynology | pollen |
| Parasitology | parasites |
| Pathology | illness |
| Pedology | soil |
| Pharmacology | drugs |
| Phonology | vocal sounds |
| Phrenology | the derivation of a persons character traits from shape of skull |
| Physiology | bodily functions |
| Phytology | plants; botany |
| Planktology | plankton |
| Psychology | mental processes in humans |
| Radiology | radiation |
| Rhinology | the nose and its diseases |
| Seismology | earthquakes |
| Selenology | the moon |
| Serology | blood serum |
| Sociology | society |
| Speleology | the study or exploration of caves |
| Theology | Religion |
| Toxicology | toxins, poisons |
| Urology | the urogenital tract |
| Vexillology | flags |
| Virology | viruses |
| Volcanology | volcanoes |
| Xylology | wood |
| Zoology | animals |
| Zymology | fermentation |