semibituminous coal

[ sem-ee-bi-too-muh-nuhs, -tyoo-, sem-ahy-, sem-ee-, sem-ahy- ]

noun

1. a coal intermediate between bituminous and anthracite coal in hardness, yielding the maximum heat of any ordinary steam coal.

Word History and Origins

Origin of semibituminous coal¹

First recorded in 1855–60; semi- + bituminous