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.
More research is needed to determine how exposure to these PFAS chemicals could affect human health, the report says, specifically around conditions where people are exposed to a mixture of pesticides at once. Karl Schneider, IndyStar, 26 Mar. 2026 Her office said that lab testing confirmed some products contained lead, arsenic, mercury, ethanol, solvents, pesticides and other unknown products. Jack Harvel, Kansas City Star, 26 Mar. 2026 The risk of adaptation is highest under a continuous, strong selection pressure, so minimizing, switching and staggering pesticides can help thwart resistance. Jacob A Tennessen, The Conversation, 26 Mar. 2026 According to the report's findings, 86% of respondents reported experiencing illness or workplace accidents, including heat stress and pesticide exposure. Ivan Taylor, CBS News, 25 Mar. 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 30 Mar. 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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