pyrobitumen

[ pahy-roh-bi-too-muhn, -tyoo-, -bich-oo- ]

noun

1. any of the dark, solid hydrocarbons including peat, coal, and bituminous shale.

Other Words From

• pyro·bi·tumi·nous pyro·bi·tumi·noid adjective

Word History and Origins

Origin of pyrobitumen¹

First recorded in 1900–05; pyro- + bitumen