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Origen
(Encyclopedia) OrigenOrigenôrˈĭjĭn [key], 185?–254?, Christian philosopher and scholar. His full name was Origines Adamantius, and he was born in Egypt, probably in Alexandria. When he was quite…natural gas
(Encyclopedia) natural gas, natural mixture of gaseous hydrocarbons found issuing from the ground or obtained from specially driven wells. The composition of natural gas varies in different…cortisone
(Encyclopedia) cortisonecortisonekôrˈtĭsōnˌ [key], steroid hormone whose main physiological effect is on carbohydrate metabolism. It is synthesized from cholesterol in the outer layer, or cortex, of…growth hormone
(Encyclopedia) growth hormone or somatotropingrowth hormonesōmătˌətrōˈpən [key], glycoprotein hormone released by the anterior pituitary gland that is necessary for normal skeletal growth in humans (…Sumner, Charles
(Encyclopedia) Sumner, Charles, 1811–74, U.S. senator from Massachusetts (1851–74), b. Boston. He attended (1831–33) and was later a lecturer at Harvard law school, was admitted (1834) to the bar,…Milošević, Slobodan
(Encyclopedia) Milošević, SlobodanMilošević, Slobodanslôbôˈdän mēlôˈshəvĭchˌ [key], 1941–2006, Yugoslav and Serbian political leader, president of Serbia (1989–97) and of Yugoslavia (1997–2000), b.…leaf
(Encyclopedia) CE5 Microscopic cross section of the leaf blade CE5 Types of leaves leaf, chief food-manufacturing organ of a plant, a lateral outgrowth of the growing point of stem. The…Chouteau
(Encyclopedia) ChouteauChouteaush&oomacr;tōˈ [key], family of American fur traders. René Auguste Chouteau, 1749–1829, b. New Orleans, accompanied (1763) his stepfather, Pierre Laclede, on a…slime mold
(Encyclopedia) slime mold or slime fungus, a heterotrophic organism once regarded as a fungus but later classified with the Protista. In a recent system of classification based on analysis of nucleic…Alzheimer's disease
(Encyclopedia) Alzheimer's diseaseAlzheimer's diseaseălsˈhīˌmərz, ôls– [key], degenerative disease of nerve cells in the cerebral cortex that leads to atrophy of the brain and senile dementia and,…Trending
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