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.
Each ingredient is diligently vetted and each product is exhaustively tested (including a microbial analysis) for heavy metals, pesticides, solvent residues, environmental contaminants, and common allergens including gluten. Brianna Peters, Vogue, 6 Mar. 2026 Mint's aromatic leaves can help repel cabbage moths2—in fact, many organic pesticides contain the essential oil of mint. Brandee Gruener, Southern Living, 6 Mar. 2026 Hunt and Warner’s work was also a key environmental discovery in understanding how the once ubiquitous pesticide DDT impacted the male seagull population. Luke Harold, San Diego Union-Tribune, 6 Mar. 2026 Mesonet data helps farmers who are planning pesticide applications avoid periods of gusty wind or heavy rain, which can lead to chemical drift or nutrient runoff. Karl Schneider, IndyStar, 5 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 10 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
Last Updated: - Updated example sentences
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