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.
Meanwhile, the widespread application of pesticides and herbicides, including glyphosate, continues to generate debate among scientists and regulators. Khloe Quill, FOXNews.com, 30 Oct. 2025 By studying these molecules and investigating why the tomatoes have reverted to ancient genes, scientists could design better crops for eating, stronger pesticides or even medicine, Jozwiak said. Taylor Nicioli, CNN Money, 30 Oct. 2025 Removes waterborne pathogens and filters pesticides, chemicals, heavy metals and microplastics and improves taste, smell and clarity. Deanna Taylor, USA Today, 30 Oct. 2025 Teddy works in a low-level job for Auxolith, a company that makes pesticides and drugs. Bill Goodykoontz, AZCentral.com, 29 Oct. 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 3 Nov. 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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