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See also: Petroleum

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EnglishEdit

 
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EtymologyEdit

From Medieval Latin petroleum, from petra (rock) + oleum (oil).

PronunciationEdit

  • (file)

NounEdit

petroleum (plural petroleums or petrolea)

  1. 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

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