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Columbia Encyclopedia

Columbia Electronic Encyclopedia, published by Columbia University Press
The Columbia Electronic Encyclopedia contains entries on people, places, events, historical facts and terms, with bibliographies for further reading.
On this page: hydra to hypertension.
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Title Index: A B C D E F G H I J K L M N O P Q R S T U V W X Y Z 0-9
H:  < Previous  21  22  Next > 

hydra (in zoology)
Hydra (constellation)
Hydra (in Greek mythology)
hydrate (in chemistry)
hydraulic machine (mechanical device)
hydraulics (branch of engineering)
hydrazine (in chemistry)
hydria (container, ancient Greece)
hydrocarbon (in chemistry)
hydrocephalus (disease)
hydrofoil (in aviation)
hydrogen (element)
hydrogen bomb (weapon)
hydrogen chloride (in chemistry)
hydrogen cyanide (in chemistry)
hydrogen fluoride (in chemistry)
hydrogen peroxide (in chemistry)
hydrogen sulfide (in chemistry)
hydrogenation (process)
hydrology (in science, hydrology)
hydrolysis (process)
hydrometer (mechanical device)
hydrophone (mechanical device)
hydroplane (vessel)
hydroponics (in agriculture)
hydrotherapy (technique)
hydrothermal vent (in Oceanography)
hydroxide (in chemistry)
hydroxyl group (in chemistry)
hyena (mammal, carnivore)
Hyères (city, France)
hygiene (in science)
hygrometer (instrument, measure)
Hyksos (people, ancient Egypt)
Hylas (in Greek Mythology)
Hymen (in the Old Testament)
Hymettus (mountains, Greece)
hymn (in Christianity, music)
Hyogo (prefecture, Japan)
hyperactivity (in psychology)
hyperbola (in geometry)
hyperbole (in linguistics)
Hyperboreans (in Greek Mythology)
hyperinsulinism (condition)
Hyperion (in Greek religion and mythology)
hyperon (in chemistry)
hypersensitivity (in psychology, medicine)
hypertension (disease)