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comet

(Encyclopedia)CE5 Comet: Whatever the direction of a comet's flight, its “tail” always points away from the sun. The tail disappears when the comet is far from the sun. comet [Gr.,=longhaired], a small cele...

Alexander III, czar of Russia

(Encyclopedia)Alexander III, 1845–94, czar of Russia (1881–94), son and successor of Alexander II. Factors that contributed to Alexander's reactionary policies included his father's assassination, his limited i...

Sanskrit literature

(Encyclopedia)Sanskrit literature, literary works written in Sanskrit constituting the main body of the classical literature of India. Nearly all Sanskrit literature, except that dealing with grammar and philosop...

meteorology

(Encyclopedia)meteorology, branch of science that deals with the atmosphere of a planet, particularly that of the earth, the most important application of which is the analysis and prediction of weather. Individual...

fetus

(Encyclopedia)fetus, term used to describe the unborn offspring in the uterus of vertebrate animals after the embryonic stage (see embryo). In humans, the fetal stage begins seven to eight weeks after fertilization...

Addison, Joseph

(Encyclopedia)Addison, Joseph, 1672–1719, English essayist, poet, and statesman. He was educated at Charterhouse, where he was a classmate of Richard Steele, and at Oxford, where he became a distinguished classic...

Thomson, James , 1700–1748, Scottish poet

(Encyclopedia)Thomson, James, 1700–1748, Scottish poet. Educated at Edinburgh, he went to London, took a post as tutor, and became acquainted with such literary celebrities as Gay, Arbuthnot, and Pope. His most f...

amino acid

(Encyclopedia)CE5 General formula of an amino acid CE5 Peptide bond between two molecules of the amino acid alanine amino acid əmēˈnō [key], any one of a class of simple organic compounds containin...

space probe

(Encyclopedia)space probe, space vehicle carrying sophisticated instrumentation but no crew, designed to explore various aspects of the solar system (see space exploration). Unlike an artificial satellite, which is...

panda

(Encyclopedia)panda, name for two unrelated nocturnal Asian mammals of the order Carnivora, red pandas, genus Ailurus, and the giant panda, Ailuropoda melanoleuca. Red pandas, also known as lesser pandas and cat be...