Search

Search results

Displaying 481 - 490

water moccasin

(Encyclopedia) water moccasin or cottonmouth, highly venomous snake, Ancistrodon piscivorus, of the swamps and bayous of the S United States. Like the closely related copperhead, it is a pit viper…

straw

(Encyclopedia) straw, dried stalks of threshed grains, especially wheat, barley, oats, and rye. It has been used from antiquity for bedding, covering floors, and thatching roofs, as fodder and litter…

sunbittern

(Encyclopedia) sunbittern, common name for a graceful, stout-bodied, bitternlike bird, Eurypyga helias. It is named for its wing markings, an orange-chestnut shield set in an orange-buff circle,…

wombat

(Encyclopedia) wombat, shy marsupial of Australia and Tasmania, related to the koala. The wombat is a thick-set animal with a large head, short legs (giving it a shuffling gait), and a very short…

Neptune, in astronomy

(Encyclopedia) Neptune, in astronomy, 8th planet from the sun at a mean distance of about 2.8 billion mi (4.5 billion km) with an orbit lying between those of Uranus and the dwarf planet Pluto; its…

condensate

(Encyclopedia) condensate, matter in the form of a gas of atoms, molecules, or elementary particles that have been so chilled that their motion is virtually halted and as a consequence they lose…

Maxwell, William Keepers, Jr.

(Encyclopedia) Maxwell, William Keepers, Jr., 1908–2000, American novelist, short-story writer, and editor, b. Lincoln, Ill. Educated at the Univ. of Illinois and Harvard, he began his career as a…

innate ideas

(Encyclopedia) innate ideas, in philosophy, concepts present in the mind at birth as opposed to concepts arrived at through experience. The theory has been advanced at various times in the history of…

Helvétius, Claude Adrien

(Encyclopedia) Helvétius, Claude AdrienHelvétius, Claude Adrienhĕlvēˈshəs, Fr. klōd ädrēăNˈ ĕlvāsyüsˈ [key], 1715–71, French philosopher, one of the Encyclopedists. He held the post of farmer-general…

insomnia

(Encyclopedia) insomnia, abnormal wakefulness or inability to sleep. The condition may result from illness or physical discomfort, or it may be caused by stimulants such as coffee or drugs. However,…