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Prometheus, in Greek mythology
(Encyclopedia)Prometheus prōmēˈthēəs [key], in Greek mythology, great benefactor of mankind. He was the son of the Titan Iapetus and of Clymene or Themis. Because he foresaw the defeat of the Titans by the Oly...voice, sound produced by living beings
(Encyclopedia)voice, sound produced by living beings. The source of the sound in human speaking and singing is the vibration of the vocal cords, which are inside the larynx, and the production of the sounds is call...grammar
(Encyclopedia)grammar, description of the structure of a language, consisting of the sounds (see phonology); the meaningful combinations of these sounds into words or parts of words, called morphemes; and the arran...North Yorkshire
(Encyclopedia)North Yorkshire, county (2011 pop. 598,376), 3,209 sq mi (8,313 sq km), N England. The county comprises the districts of Craven, Hambleton, Harrogate, Richmondshire, Ryedale, Scarborough, and Selby. Y...mental retardation
(Encyclopedia)mental retardation, below average level of intellectual functioning, usually defined by an IQ of below 70 to 75, combined with limitations in the skills necessary for daily living. Daily living skills...Siebold
(Encyclopedia)Siebold tāˈōdōr ĕrnst [key], 1804–85, also a physician, was one of the foremost biologists of his time. He specialized in the comparative anatomy of invertebrates and wrote the first volume (18...rose of Jericho
(Encyclopedia)rose of Jericho, common name for two plants belonging to different families in the plant kingdom. One, an annual desert plant (Anastatica hierochuntica) of the family Cruciferae (or Brassicaceae; must...Trabert, Tony
(Encyclopedia) Trabert, Tony (Marian Anthony Trabert), 1930-2021, American tennis champion, b. Cincinnati, Oh. Trabert showed talent at tennis from a young age, winn...geochemistry
(Encyclopedia)geochemistry, study of the chemical changes on the earth. More specifically, it is the study of the absolute and relative abundances of chemical elements in the minerals, soils, ores, rocks, water, an...gasohol
(Encyclopedia)gasohol, a gasoline extender made from a mixture of gasoline (90%) and ethanol (10%; often obtained by fermenting agricultural crops or crop wastes) or gasoline (97%) and methanol, or wood alcohol (3%...Browse by Subject
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