[awr-guh-noh-fos-feyt, awr-gan-uh]
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.
Also called organophosphorus compounds [awr-guh-noh-fos-fer-uhs, awr-gan-uh] .

1945–50; organo- + phosphate Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
organophosphate (ɔːˌɡænəʊˈfɒsfeɪt)
any of a group of organic compounds containing phosphate groups and used as a pesticide

Collins English Dictionary - Complete & Unabridged 10th Edition
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American Heritage
Medical Dictionary

organophosphate or·gan·o·phos·phate (ôr'gān'ə-fŏs'fāt)
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.
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