pyrobitumen

[ pahy-roh-bi-too-muh n, -tyoo-, -bich-oo- ]
/ ˌpaɪ roʊ bɪˈtu mən, -ˈtyu-, -ˈbɪtʃ ʊ- /

noun

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

Origin of pyrobitumen

First recorded in 1900–05; pyro- + bitumen

OTHER WORDS FROM pyrobitumen

py·ro·bi·tu·mi·nous, py·ro·bi·tu·mi·noid, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019