parathion

[ par-uh-thahy-on ]
/ ˌpær əˈθaɪ ɒn /

noun Chemistry.

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

Origin of parathion

First recorded in 1945–50; para-1 + thi- + -on(e)

Words nearby parathion

paratenesis, paratenic host, paratenon, paraterminal gyrus, paratha, parathion, parathyrin, parathyroid, parathyroid extract, parathyroid gland, parathyroid glands

British Dictionary definitions for parathion

parathion
/ (ˌpærəˈθaɪɒn) /

noun

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

Word Origin for parathion

C20: from para- 1 + thio- + -on

Medical definitions for parathion

parathion
[ păr′ə-thī′ŏn ]

n.

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