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.
Previous studies have already linked chemicals found in pesticides including paraquat and rotenone to neurodegeneration, according to the study. Hollie Silverman, MSNBC Newsweek, 10 May 2025 The ‘Exposome’ Of Chemicals Is An Important Cause of Early-Onset Cancer Modernity is a soup of synthetic chemicals -- from BPA in plastics to phthalates in cosmetics, PFAS in water-resistant materials and pesticides in food. Jesse Pines, Forbes.com, 10 May 2025 In the fall of 1941, Pilecki passed on to the Warsaw command word of new extermination chambers where the camp’s sick and disabled were being murdered with Zyklon B, the fast-acting pesticide that would enable the Nazis to kill millions. Paul Hockenos, Smithsonian Magazine, 8 May 2025 For a larger problem, applying insecticidal soap or neem oil are less-toxic solutions than stronger pesticides. Sheryl Geerts, Better Homes & Gardens, 7 May 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 25 May. 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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