• synonyms


[ awr-guh-noh-fos-feyt, awr-gan-uh‐ ]
/ ˌɔr gə noʊˈfɒs feɪt, ɔrˌgæn ə‐ /


Biochemistry. any of a variety of organic compounds that contain phosphorus and often have intense neurotoxic activity: originally developed as nerve gases, now widely used as insecticides and fire retardants.

Nearby words

organomagnesium, organomegaly, organomercurial, organometallic, organon, organophosphate, organosilicon, organosiloxane, organotherapy, organotin, organotrophic

Origin of organophosphate

First recorded in 1945–50; organo- + phosphate
Also called or·ga·no·phos·pho·rus com·pounds [awr-guh-noh-fos-fer-uh s, awr-gan-uh‐] /ˌɔr gə noʊˈfɒs fər əs, ɔrˌgæn ə‐/. Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for organophosphate


/ (ɔːˌɡænəʊˈfɒsfeɪt) /


any of a group of organic compounds containing phosphate groups and used as a pesticide
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

Medicine definitions for organophosphate


[ ôr′găn′ə-fŏsfāt ]


Any of several organic compounds containing phosphorus, some of which are used as fertilizers and pesticides.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.