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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

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Several other Asian countries that are heavy oil importers enacted energy-saving measures early on.

From MarketWatch Jun. 9, 2026

Rome has said the ship was carrying "significant quantities of gas, heavy oil, and diesel fuel".

From Barron's Mar. 15, 2026

A global shortage of heavy oil has squeezed Gulf Coast refinery margins for years, prompting them to use more of the costlier U.S.-produced oil to make transportation fuels and petrochemicals.

From The Wall Street Journal Mar. 5, 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

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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