pyrethrine
pyrethrine is the obsolete form of pyrethrin.
Meaning of pyrethrin
Noun
pyrethrin (plural pyrethrins)
- 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
Forms of pyrethrine
| plural | pyrethrines |
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Questions about pyrethrine
- What is pyrethrine the obsolete form of?
- Pyrethrine is the obsolete form of pyrethrin.
Words near pyrethrine in the dictionary
Source and license
Adapted from Wiktionary: pyrethrine (page history and authors); 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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Cite this entry: “pyrethrine.” Word.ws, https://word.ws/pyrethrine. Based on Wiktionary, CC BY-SA 4.0.