coal-fired

The compound adjective "coal-fired" is a modern industrial term constructed from two ancient Germanic roots. "Coal" descends from the Old English col, referring to the combustible mineral, while "fired" originates from Old English fȳr, the element of combustion. The literal combination, "heated by coal," directly and transparently describes the operational method of engines, furnaces, or power stations. This compounding logic reflects a straightforward English pattern for specifying an energy source, paralleling terms like "wood-fired" or "gas-fired," and emerged prominently with the Industrial Revolution to characterize steam and later electrical generation technology.

Structure: coal (fuel) + fired (heated) - coal: From Old English col (charcoal, live coal), of Germanic origin. Functions as a noun used attributively to specify the type of fuel. - fired: From the past participle of the verb fire, from Old English fȳr (fire), of Germanic origin. Functions as an adjective-forming element meaning "heated by" or "operated by means of".