parathion

noun

chemical compound

Wiktionary

Pronunciation: /pæɹəˈθaɪɒn/

noun

Etymology: Etymology tree Proto-Indo-European *per- Proto-Indo-European *preh₂- Proto-Hellenic *pərai Ancient Greek πᾰρᾰ́ (părắ) Ancient Greek πᾰρᾰ- (pără-)der. English para- English -thion English parathion From para- (“p-”) + -thion.

An organophosphorus insecticide acaricide, [O,O-diethyl-O-4-nitro-phenylthiophosphate], a powerful, dangerously toxic insecticide.