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.
Limiting runoff from pesticides and fertilizers often used on lawns can reduce saltwater intrusion in aquifers and contamination in waterways, Davidson said. Eduardo Cuevas, USA Today, 4 Sep. 2025 Environmental groups support paying farmers to leave flood-prone land because floodwater that spreads across farm fields washes fertilizer, pesticides and other chemicals into rivers, causing a range of down-river harms. Molly Parker, ProPublica, 4 Sep. 2025 Another way to improve pollinator activity is to minimize pesticide use near your trees and keep your garden and lawn as organic as possible. Lauren Landers, Better Homes & Gardens, 2 Sep. 2025 Potential concerns included security and nearby farm pesticides drifting into the outdoor growing areas. Robert McCoppin, Chicago Tribune, 2 Sep. 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 9 Sep. 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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