[ par-uh-thahy-on ]
/ ˌpær əˈθaɪ ɒn /
a deep-brown to yellow, poisonous liquid, C10H14NO5PS, used as an insecticide.
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Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020
British Dictionary definitions for parathion
/ (ˌpærəˈθaɪɒn) /
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
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Medical definitions for parathion
[ păr′ə-thī′ŏn ]
A highly poisonous organic phosphate insecticide that is an irreversible inhibitor of cholinesterase.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.