noun. An organophosphate compound, C₁₀H₁₉O₆PS₂, used as an insecticide.

"According to its most recent report in 2008, for example, a type of organophosphate called malathion was detected in 28 percent of frozen blueberries, 25 percent of fresh strawberries and 19 percent of celery."

carbophos  maldison  mercaptothion