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.
For both women, their efforts are a small way to combat the devastation human activity has brought to monarch butterfly populations, including climate change, deforestation and heavy pesticide use. Joseph States, Chicago Tribune, 17 July 2025 The experts there suggested neem oil, which is a natural pesticide that does not contain harmful chemicals. Amy Panos, Better Homes & Gardens, 4 July 2025 These include light pollution, urban development, the use of pesticides and other chemicals sprayed in yards, and climate change. Connor Giffin, The Courier-Journal, 3 July 2025 On food safety generally, Kennedy appears to be at odds with director Zeldin’s decisions to deregulate pesticides. Joshua P. Cohen, Forbes.com, 2 July 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

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Cite this Entry

“Pesticide.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/pesticide. Accessed 25 Jul. 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
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