insecticidal

adjective

in·​sec·​ti·​cid·​al (ˌ)in-ˌsek-tə-ˈsī-dᵊl How to pronounce insecticidal (audio)
1
: destroying or controlling insects
2
: of or relating to an insecticide
insecticidally adverb

Examples of insecticidal 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.
Spray plants with neem oil, spinosad, or insecticidal soap, though these products must contact the beetles to work. Arricca Elin Sansone, Southern Living, 23 June 2026 The best treatment for these pests, which include aphids, white flies, and thrips, is typically done with alternating treatment of neem oil and insecticidal soap. Anthony Reardon, Kansas City Star, 20 June 2026 Organic aphid infestation control is possible via neem oil or insecticidal soap. Gemma Johnstone, The Spruce, 18 June 2026 Bt, insecticidal soap, and neem oil are derived from natural materials and can be used on specific pests. Leanne Potts, Better Homes & Gardens, 11 June 2026 See All Example Sentences for insecticidal

Word History

First Known Use

1857, in the meaning defined at sense 1

Time Traveler
The first known use of insecticidal was in 1857

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Cite this Entry

“Insecticidal.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/insecticidal. Accessed 28 Jun. 2026.

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