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English Lexicon

Petroleum

/pəˈtroʊ.li.əm/
nounCEFR B2 (Upper)Top #2150 frequency
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Comprehensive Definitions & Senses

2 senses
As noun
  1. 1

    A liquid mixture of hydrocarbons that is present in certain rock strata and can be extracted and refined to produce fuels including gasoline, kerosene, and diesel oil.

    "The country relies heavily on the export of petroleum to sustain its economy."
  2. 2

    Crude oil in its raw, unprocessed state before distillation and refining.

    "Global petroleum prices fluctuated throughout the week due to geopolitical tensions."
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Antonyms & Contrasting Words (1)

Linguistic Origin & Historical Etymology

Derived from Modern Latin petroleum, originating from Medieval Latin petra (meaning rock, from Greek petra) and Latin oleum (meaning oil). First used in English during the late 16th century to describe naturally occurring liquid hydrocarbon mixtures found beneath the Earth's surface.

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