Malathion Definition
mălə-thīŏn
noun
An organic phosphate, C10H19O6S2P, of relatively low toxicity for mammals, used as an insecticide.
Webster's New World
Trade name for a pesticide, Diethyl [(dimethoxyphosphinothioyl)-thio]butanedioate.
Wiktionary
Origin of Malathion
Alteration (influenced by parathion) of earlier malathon alteration of male(ate) (me)th(yl) –on (perhaps modeled on marathon)
From American Heritage Dictionary of the English Language, 5th Edition
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