Dictionary.com
Thesaurus.com

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

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

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

From MarketWatch Jun. 9, 2026

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

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

From The Wall Street Journal Jan. 23, 2026

By reclassifying the country’s Orinoco Belt heavy oil as “proved,” Venezuela’s reserves jumped sharply in the late 2000s under former president Hugo Chavez.

From Barron's Jan. 6, 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

Vocabulary.com logo
by dictionary.com

Dictionary.com's Learning Companion

Go beyond just looking up words.
Remember them forever with VocabTrainer.

Start training