Petroleum Definition

pə-trōlē-əm
noun
An oily, flammable, liquid solution of hydrocarbons, yellowish-green to black in color, occurring naturally in the rock strata of certain geological formations: when fractionally distilled, it yields paraffin, fuel oil, kerosene, gasoline, etc.
Webster's New World
Synonyms:

Other Word Forms of Petroleum

Noun

Singular:
petroleum
Plural:
petroleums

Origin of Petroleum

  • Middle English from Medieval Latin petrōleum Latin petra rock petrous Latin ōleum oil oil

    From American Heritage Dictionary of the English Language, 5th Edition

  • From Medieval Latin petroleum, from petra (“rock") + oleum (“oil").

    From Wiktionary

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