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.
The species went into decline for a number of reasons, including pesticides and a disease known as white-nose syndrome, federal officials say. Mark Price june 28, Charlotte Observer, 28 June 2026 They should not have been treated with pesticides, and should be food-grade if buying from a local florist. Melissa Kravitz Hoeffner, Martha Stewart, 27 June 2026 The court held that federal pesticide law preempts a state failure-to-warn claim when the Environmental Protection Agency has not required a cancer warning on the product label. Alex Smolak, STAT, 27 June 2026 In California, on-the-ground enforcement for pesticide regulations is conducted by county agricultural commissioners. Lizzie Kane june 26, Sacbee.com, 26 June 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 Jun. 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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