---
title: "Index of branches of science"
chunk: 4/10
source: "https://en.wikipedia.org/wiki/Index_of_branches_of_science"
category: "reference"
tags: "science, encyclopedia"
date_saved: "2026-05-05T03:28:12.104269+00:00"
instance: "kb-cron"
---

== G ==
Garbology – Study of modern refuse
Gastroenterology – Branch of medicine focused on the digestive system and its disorders
Gastronomy – Study of the relationship between food and culture
Gemmology – Science dealing with natural and artificial gemstone materialsPages displaying short descriptions of redirect targets – study of gems and jewels
Gender studies – Interdisciplinary field of study – study of gender
Genealogy – Study of individual descent and bloodline – study of descent of families
Genesiology – study of reproduction and heredity 
Genetics – Science of genes, heredity and variation
Geochemistry – Science that applies chemistry to analyze geological systems – study of chemistry of the Earth's crust
Geochronology – Science of determining the age of rocks, sediments and fossils – study of measuring geological time
Geography – Study of Earth's spatial information – study of surface of the earth and its inhabitants
Geology – Scientific study of Earth's physical composition – study of the rocks of a planet
Geometry – Branch of mathematics – study the sizes, shapes, positions, angles and dimensions of things.
Geomorphogeny – study of the characteristics, origins, and development of land forms
Geomorphology – Scientific study of landforms – study of landforms and landform evolution
Geoponics – Science of cultivating the earth – study of agriculture
Geotechnics – Scientific study of earth materials in engineering problemsPages displaying short descriptions of redirect targets – study of increasing habitability of the Earth
Geratology – Study of the biological, psychological, and social aspects of agingPages displaying short descriptions of redirect targets – study of decadence and decay
Gerocomy – study of old age
Gerontology – Study of the biological, psychological, and social aspects of aging
Gigantology – study of giants
Glaciology – Scientific study of ice and natural phenomena involving ice
Glossology – Scientific study of languagePages displaying short descriptions of redirect targets – study of language; study of the tongue
Gnomonics – Study of sundials – the art of measuring time using sundials
Gnotobiology – Organism with fully-known microorganismsPages displaying short descriptions of redirect targets – study of life in germ-free conditions
Googology – Numbers significantly larger than those used regularlyPages displaying short descriptions of redirect targets – study of large numbers
Graminology – Scientific study of the grassesPages displaying short descriptions of redirect targets
Grammatology – Study of graphemes and writing systemsPages displaying short descriptions of redirect targets – study of systems of writing
Graphemics – Study of graphemes and writing systemsPages displaying short descriptions of redirect targets – study of systems of representing speech in writing
Graphology – Pseudoscientific analysis of handwriting – study of handwriting 
Gromatics – Ancient Roman land surveyorsPages displaying short descriptions of redirect targets – science of surveying
Gynaecology – Medical area for women's reproductive health – study of women's physiology
Gyrostatics – study of rotating bodies

== H ==
Haemataulics – study of movement of blood through blood vessels
Halieutics – study of fishing
Harmonics – Science of musical sounds
Helcology – study of ulcers
Heliology – Scientific study of the sun
Helioseismology – Study of the structure and dynamics of the Sun through its oscillation
Helminthology – Study of parasitic worms (helminths)
Hematology – Study of blood and blood diseases
Hemodynamics – Dynamics of blood flow – study of the dynamics behind blood circulation
Hepatology – Medical specialty – study of liver, gallbladder, biliary tree, and pancreas
Hermeology – study of Mercury
Herpetology – Study of amphibians and reptiles
Hippiatrics – study of diseases of horses
Hippology – Study of horses
Histology – Study of the microscopic anatomy of cells and tissues of plants and animals
Histopathology – Microscopic examination of tissue in order to study and diagnose disease – study of changes in tissue due to disease
Historiography – Study of the methods used by historians
Historiology – The study of history.
Home economics – Study of household management
Hoplology – Study of human combative behavior and performance
Horography – art of constructing sundials or clocks 
Horology – Art or science of measuring time – science of time measurement 
Horticulture – Small-scale cultivation of plants – study of gardening 
Hydraulics – Applied engineering involving liquids – study of application of engineering, chemistry and other fields of science involving the use of liquids 
Hydrobiology – Science of life and life processes in water – study of aquatic organisms
Hydrodynamics – Study of liquids in motion
Hydrogeology – Study of groundwater's movement and distribution
Hydrography – Measurement of bodies of water
Hydrokinetics – study of motion of fluids
Hydrology – Science of the movement, distribution, and quality of water on Earth – study of water resources
Hydrometeorology – Branch of meteorology and hydrology – study of atmospheric moisture 
Hydrostatics – Branch of fluid mechanics that studies fluids at rest
Hyetology – science of rainfall
Hygiastics – science of health and hygiene 
Hygienics – Practices performed to preserve healthPages displaying short descriptions of redirect targets – study of sanitation; health 
Hygiology – hygienics; study of cleanliness 
Hygroscopy – Phenomenon of attracting and holding water molecules – study of humidity
Hygrometry – Study of gas-vapor mixturesPages displaying short descriptions of redirect targets – science of humidity
Hypnology – Study of sleep and hypnotic phenomena – study of sleep; study of hypnosis.
Hypsography – Geographical measurementPages displaying short descriptions of redirect targets – science of measuring heights