pesticide

noun

pes·​ti·​cide ˈpe-stə-ˌsīd How to pronounce pesticide (audio)
Synonyms of pesticidenext
: an agent used to destroy pests
pesticidal adjective

Examples of pesticide in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
For a movement built partly around concern over pesticides and environmental toxins, that was not a side issue. Ed Gaskin, Boston Herald, 30 May 2026 The Environmental Working Group announced its support for California Assembly Bill 1603, which aims to ban the use, sale, and manufacture of PFAS pesticides used on crops statewide by 2035. Noe Padilla, USA Today, 29 May 2026 Drawbacks of Using Garlic to Deter Pests Like most pesticides, garlic sprays don't discriminate between pests and beneficial insects. Madeline Buiano, Martha Stewart, 29 May 2026 To make your lawn more inviting, skip harsh pesticides and chemical treatments whenever possible. Jessica Safavimehr, Southern Living, 29 May 2026 See All Example Sentences for pesticide

Word History

First Known Use

circa 1925, in the meaning defined above

Time Traveler
The first known use of pesticide was circa 1925

Browse Nearby Words

Cite this Entry

“Pesticide.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/pesticide. Accessed 4 Jun. 2026.

Kids Definition

pesticide

noun
pes·​ti·​cide ˈpes-tə-ˌsīd How to pronounce pesticide (audio)
: a substance used to destroy pests
pesticidal
ˌpes-tə-ˈsīd-ᵊl
adjective

Medical Definition

pesticide

noun
pes·​ti·​cide ˈpes-tə-ˌsīd How to pronounce pesticide (audio)
: an agent used to destroy pests
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