tox·​i·​cant | \ ˈtäk-si-kənt How to pronounce toxicant (audio) \

Definition of toxicant

: a toxic agent especially : pesticide

Examples of toxicant in a Sentence

Recent Examples on the Web In May 2020, the EU's European Commission updated its classification of butylphenyl methylpropional (most commonly known as lilial) to presumed reproductive toxicant, and banned the ingredient as of March 1, 2022. Emily Rekstis, Allure, 2 Mar. 2022 More than 200 parents, teachers and students filed lawsuits against Monsanto, the manufacturer of the PCBs, for exposure to the toxicant at Sky Valley. Lulu Ramadan, ProPublica, 7 Feb. 2022 The birds were the unintended victims of a field experiment to test a toxicant—one intended for feral pigs, but no other animals—that had been developed in Australia. Stephen Ornes, The Atlantic, 15 May 2021 The toxicant, called 6PPD-quinone, leaches out of the particles that tires shed onto pavement. Erik Stokstad, Science | AAAS, 3 Dec. 2020 The state of California classifies it as a reproductive and developmental toxicant in humans. Dina Fine Maron, Scientific American, 12 May 2015 Heart medications, antidepressants, and ADHD medications, are also typical toxicants. National Geographic, 29 Jan. 2020 The effects of these toxicants can move through the ecological food chain, much like the long-term harms once posed by DDT. Andrea Michelson, Smithsonian, 26 Nov. 2019 From 2013 to 2015, 11 miles (18 kilometers) of Silver King Creek and three tributaries were treated with a fish toxicant, rotenone, to remove all non-native species. San Diego Union-Tribune, 17 Sep. 2019 See More

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

First Known Use of toxicant

1879, in the meaning defined above

History and Etymology for toxicant

Medieval Latin toxicant-, toxicans, present participle of toxicare to poison, from Latin toxicum

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The first known use of toxicant was in 1879

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Cite this Entry

“Toxicant.” Dictionary, Merriam-Webster, Accessed 1 Jul. 2022.

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More Definitions for toxicant


tox·​i·​cant | \ ˈtäk-si-kənt How to pronounce toxicant (audio) \

Medical Definition of toxicant

: a toxic agent especially : one for insect control that kills rather than repels

More from Merriam-Webster on toxicant

Thesaurus: All synonyms and antonyms for toxicant

Britannica English: Translation of toxicant for Arabic Speakers


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