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heavy oil

British  

noun

  1. a hydrocarbon mixture, heavier than water, distilled from coal tar

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Example Sentences

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Chevron recently expanded its footprint in Venezuela in an asset-swap deal that would boost its position in regions rich in viscous heavy oil that U.S. refineries favor.

From The Wall Street Journal • May 1, 2026

To produce oil there, the industry separates heavy oil, or bitumen, from the sands through an underground process that uses steam.

From Barron's • Mar. 24, 2026

TotalEnergies CEO Patrick Pouyanné said that the challenges of producing Venezuela’s heavy oil are considerable.

From The Wall Street Journal • Jan. 23, 2026

What’s more, heavy oil sells for less money.

From Barron's • Jan. 7, 2026

It was a big, light room in a wing of the house, all the windows thrown open to air out the heavy oil and turpentine smells.

From "How the García Girls Lost Their Accents" by Julia Alvarez

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