or·​gan·​o·​chlo·​rine ˌȯr-gə-nō-ˈklȯr-ˌēn How to pronounce organochlorine (audio)
: of, relating to, or being a chlorinated hydrocarbon and especially one used as a pesticide (such as aldrin, DDT, or dieldrin)
organochlorine noun

Example Sentences

Recent Examples on the Web Tribal biologists have already sampled seals and sea lions for organochlorine pesticides such as DDT and found them at lower levels than elsewhere in California. Louis Sahagúnstaff Writer, Los Angeles Times, 11 Apr. 2022 Less partisan actors noted that organochlorine pesticides like DDT had only been replaced by organophosphate pesticides, which are far deadlier than their more famous cousins. Scott W. Stern, The New Republic, 31 May 2022 In an early skirmish, the state of Mississippi provided farmers with chlordane, an indiscriminate, organochlorine pesticide long since banned. Elizabeth Kolbert, The New Yorker, 25 Oct. 2021 Other state officials had suggested that an organochlorine substance, found in pesticides, may have poisoned the patients. Ryan W. Miller, USA TODAY, 8 Dec. 2020

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'organochlorine.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

Word History

First Known Use

1961, in the meaning defined above

Time Traveler
The first known use of organochlorine was in 1961

Dictionary Entries Near organochlorine

Cite this Entry

“Organochlorine.” Dictionary, Merriam-Webster, Accessed 4 Dec. 2022.

Medical Definition



or·​gan·​o·​chlo·​rine ȯr-ˌgan-ə-ˈklō(ə)r-ˌēn, -ˈklȯ(ə)r-, -ən How to pronounce organochlorine (audio)
: of, relating to, or being a chlorinated hydrocarbon and especially one used as a pesticide (as aldrin, DDT, or dieldrin)
organochlorine noun
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