chlorpyrifos

noun

1. (uncountable)A crystalline organophosphate insecticide that inhibits acetylcholinesterase.[diethoxy-sulfanylidene-(3,5,6-trichloropyridin-2-yl)oxy-λ5-phosphane]

   “"Chlorpyrifos is considered to be toxic to fish, crustaceans, and bees."”

   “Five of these chemicals – naled, methamidophos, trichlorfon, chlorpyrifos and phorate – showed up in at least 10% of the cord blood samples.”