Definition of "chlorpyrifos" [chlorpyrifos]

• A crystalline organophosphate insecticide that inhibits acetylcholinesterase. (noun)

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• "One of the worst offenders is called chlorpyrifos, a known neurotoxin and carcinogen."
• "Other non-persistent insecticides such as chlorpyrifos and carbofuran are not recommended due to severe phytotoxic effects."
• "Studies have been carried out on the use of IGRs combined with conventional insecticides such as chlorpyrifos-methyl and fenitrothion."