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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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The U.S. already has the heavy oil it needs to meet diesel demand, and Venezuela will have little chance penetrating the U.S. market as long as cost of carry weighs heavily in Canada’s favor.

From The Wall Street Journal Sep. 1, 2026

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

From MarketWatch Jun. 9, 2026

In Venezuela, where Chevron is the largest foreign investor, the company agreed this past week to 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 Apr. 20, 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

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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