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pyrethrin

pyrethrin noun: any of a number of naturally occurring insecticides extracted from the pyrethrum plant; unusual in having a cyclopropane ring.

pyrethrin: any of a number of naturally occurring insecticides extracted from the pyrethrum plant; unusual in...
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Noun

pyrethrin (plural pyrethrins)

  1. Any of a number of naturally occurring insecticides extracted from the pyrethrum plant; unusual in having a cyclopropane ring.
    • Ecoparasite control, with appropriate concentrations of carbaryl, malathion, or pyrethrin dusts, is permissible if the agent is applied externally to both test and control animals not less than seven days prior to the start of the test.1983, D. E. Kaukeinen, Vertebrate Pest Control and Management Materials, page 102
    • The biggest risk raised in the findings, Mr. Abecassis said, is the exposure to pesticides, which have been linked to a range of serious illnesses including fatal cancers and organ damage. Six of the tested products contained chemicals like myclobutanil and pyrethrins in concentrations far above...2022 December 1, Ashley Southall, “What’s in New York’s Illicit Cannabis: Germs, Toxins and Metals”, in The New York Times

Examples of pyrethrin in a sentence

  • Six of the tested products contained chemicals like myclobutanil and pyrethrins in concentrations far above state limits, according to the analysis.2022 December 1, Ashley Southall, “What’s in New York’s Illicit Cannabis: Germs, Toxins and Metals”, in The New York Times:
  • *Permethrin is the artificial version of pyrethrin, which is made from chrysanthemum flowers.2023, translated in 2025, Berta Páramo and translated by Marc Correa Haro, Lice: How to Survive on Humans, page 152:

Forms of pyrethrin

pluralpyrethrins

Origin of pyrethrin

From pyrethrum + -in.

Words formed from pyrethrin

Questions about pyrethrin

What does pyrethrin mean?
Pyrethrin means any of a number of naturally occurring insecticides extracted from the pyrethrum plant; unusual in having a cyclopropane ring.
How do you use pyrethrin in a sentence?
Six of the tested products contained chemicals like myclobutanil and pyrethrins in concentrations far above state limits, according to the analysis.
What part of speech is pyrethrin?
Pyrethrin is a noun.
What is the plural of pyrethrin?
The plural of pyrethrin is pyrethrins.

Words near pyrethrin in the dictionary

  1. pyrenylene
  2. pyrenylenes
  3. pyrenyls
  4. pyres
  5. pyrethric
  6. pyrethrin
  7. pyrethrine
  8. pyrethrines
  9. pyrethrins
  10. pyrethroid
  11. pyrethroids

Source and license

Adapted from Wiktionary: pyrethrin (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

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