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pesticide

noun

pes·​ti·​cide ˈpe-stə-ˌsīd How to pronounce pesticide (audio)
: 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.
The particular problem with these pesticides is that both of them contain toxic PFAS, short for per- and polyfluoroalkyl substances. Jeffrey Kluger, Time, 26 Nov. 2025 The unannounced inspection found three critical violations, including pesticide traps found behind a television stand, an electrical box missing a cover and a secondary lock in disrepair. Keely Doll, Louisville Courier Journal, 25 Nov. 2025 But there’s also traffic, pesticides and other harmful chemicals and rats, cats and dogs to contend with. Scottie Andrew, CNN Money, 23 Nov. 2025 If avoiding pesticides in foods is your goal, organic is the clear choice. Mark Gurarie, Health, 23 Nov. 2025 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 1 Dec. 2025.

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
Last Updated: - Updated example sentences
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