parathion

noun Chemistry.

1. a deep-brown to yellow, poisonous liquid, C10H14NO5PS, used as an insecticide.

noun

1. a slightly water-soluble toxic oil, odourless and colourless when pure, used as an insecticide. Formula: C 10 H 14 NO 5 PS

n.

1. A highly poisonous organic phosphate insecticide that is an irreversible inhibitor of cholinesterase.