waste product

noun

: useless material that is produced when making something else

a hazardous waste product

Examples of waste product in a Sentence

Recent Examples on the Web

The process, which recycles optical glass waste product, is a visceral and sensory practice, and speed and movement are key—malleable molten glass waits for no one. — Clare Coulson, Condé Nast Traveler, 8 Sep. 2026

In addition to making Perkin a wealthy man, his dye introduced a whole new industry and took coal tar from a waste product to a valuable raw material. — Encyclopedia Britannica, 21 Aug. 2026

Food waste to renewable natural gas Here, a special cocktail of microbes will feed on the slurry, releasing gases, like methane, as a waste product. — Christopher McFadden, Interesting Engineering, 1 Aug. 2026

Those opportunists are rumen microbes called methanogens, and their waste product is methane, a notoriously powerful heat-trapping greenhouse gas. — Marlowe Starling, Quanta Magazine, 27 July 2026