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.
Habitat loss, wind turbines, pesticide use, and most recently, white nose syndrome – a fungal disease – have all taken a serious toll. Anna Tunkova, CNN Money, 15 Aug. 2025 Weed customers don’t seem inclined to pay more for cannabis harvested without pesticides, or trimmed by hand, or grown in a celebrated region. Daniel De Visé, USA Today, 10 Aug. 2025 Before construction could begin, the city had to address arsenic and pesticide contamination and harmful vapors from petroleum and industrial chemicals, according to the Department of Toxic Substances Control, which oversaw remediation. Michael Slaten, Oc Register, 5 Aug. 2025 On Earth, wastewater includes various types of water: residential wastewater from sinks, showers and toilets; industrial wastewater from factories and manufacturing processes; and agricultural runoff, which contains fertilizers and pesticides. Berrin Tansel, The Conversation, 30 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

Browse Nearby Words

Cite this Entry

“Pesticide.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/pesticide. Accessed 21 Aug. 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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