bituminous coal

WordReference Random House Learner's Dictionary of American English © 2026

biˈtu•mi•nous ˈcoal, n. [uncountable]

1. Mining a soft coal that can be readily burned.

WordReference Random House Unabridged Dictionary of American English © 2026

bitu′minous coal′, 

1. Mining a mineral coal that contains volatile hydrocarbons and tarry matter and burns with a yellow, smoky flame;
   soft coal.

• 1875–80

Collins Concise English Dictionary © HarperCollins Publishers::

bituminous coal noun

1. a soft black coal, rich in volatile hydrocarbons, that burns with a smoky yellow flame. Fixed carbon content: 46–86 per cent; calorific value: 1.93 × 10⁷ – 3.63 × 10⁷ J/kg