The Collaborative International Dictionary
Benzoyl \Ben"zoyl\, n. [Benzoic + Gr. ? wood. See -yl.] (Chem.) A compound radical, C6H5.CO-; the base of benzoic acid, of the oil of bitter almonds, and of an extensive series of compounds. [Formerly written also benzule.]
Wiktionary
n. (context organic chemistry especially in combination English) A univalent radical formally derived from benzoic acid, C6H5CO-, by removal of the hydroxyl group
WordNet
Wikipedia
Usage examples of "benzoyl".
You can add additional layers, covering acne with makeup, or treating it with sperm or with benzoyl peroxide.
Tracing the circuits of the flour-stream blender to allow for manual operation seemed straightforward enough, but I forgot about the sample analyzer with its additive-injection unit for quality control Bypass that and you get raw stuff with a funny color and unpredictable properties that brings the bakers screaming- Try to inject the additives manually and you end up with half-poisonous crap contaminated with benzoyl peroxide and potassium bromate and Tana knows what else.