petroleum, crude oil, crude, rock oil, fossil oil, oil
(noun) a dark oil consisting mainly of hydrocarbons
Source: WordNet® 3.1
petroleum (plural petroleums or petrolea)
a flammable liquid ranging in color from clear to very dark brown and black, consisting mainly of hydrocarbons, occurring naturally in deposits under the Earth's surface
Synonyms: crude oil, oil
Source: Wiktionary
Pe*tro"le*um, n. Etym: [NL., fr. L. petra a rock + oleum oil: cf. F. pétrole. Cf. Petrify, and Oil.]
Definition: Rock oil, mineral oil, or natural oil, a dark brown or greenish inflammable liquid, which, at certain points, exists in the upper strata of the earth, from whence it is pumped, or forced by pressure of the gas attending it. It consists of a complex mixture of various hydrocarbons, largely of the methane series, but may vary much in appearance, composition, and properties. It is refined by distillation, and the products include kerosene, benzine, gasoline, paraffin, etc. Petroleum spirit, a volatile liquid obtained in the distillation of crude petroleum at a temperature of 170° Fahr., or below. The term is rather loosely applied to a considerable range of products, including benzine and ligroin. The terms petroleum ether, and naphtha, are sometimes applied to the still more volatile products, including rhigolene, gasoline, cymogene, etc.
Source: Webster’s Unabridged Dictionary 1913 Edition
6 November 2024
(adverb) in a searching manner; “‘Are you really happy with him,’ asked her mother, gazing at Vera searchingly”
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