Crude oil

noun

Definitions

Noun
  1. 1
    Unrefined oil; as it is found underground, consisting mainly of hydrocarbons. uncountable, usually

    "Further west, in Pembrokeshire, the Esso Petroleum Co. refinery at Milford Haven, opened last November, is designed to berth the world's largest tankers and to process, initially, 4,500,000 tons of crude oil a year."

  2. 2
    a dark oil consisting mainly of hydrocarbons wordnet

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