PETROLEUM /pəˈtɹoʊliəm/ ► audio Scrabble 13 Words With Friends 17 Definition noun a dark oil consisting mainly of hydrocarbons. — synonyms: crude_oil, crude, rock_oil, fossil_oil, oil See all 232 words you can make from PETROLEUM → 9-letter words Words starting with P Words ending with M ← Unscramble different letters