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pyrethrin
[ pahy-ree-thrin, -reth-rin ]
noun
- Also called pyrethrin I. a viscous, water-insoluble liquid, C 2 1 H 2 8 O 3 , extracted from pyrethrum flowers, used as an insecticide.
- Also called pyrethrin II. a like compound, C 2 2 H 2 8 O 5 , obtained and used similarly.
pyrethrin
/ ±è²¹ÉªËˆ°ù¾±Ëθ°ùɪ²Ô /
noun
- Also calledpyrethrin I an oily water-insoluble compound used as an insecticide. Formula: C 21 H 28 O 3
- Also calledpyrethrin II a compound of similar chemical structure and action, also found in pyrethrum. Formula: C 22 H 28 O 5
51³Ô¹Ï History and Origins
Origin of pyrethrin1
51³Ô¹Ï History and Origins
Origin of pyrethrin1
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How does pyrethrin compare to similar and commonly confused words? Explore the most common comparisons:
Example Sentences
The team also used chemical analysis to determine how two of pyrethrum’s molecular components—EBF and pyrethrin—elicit the repellent response.
Although each product has the same effect on insects — and presents the same risks to beneficial insects — pyrethrin usually is more potent and lasts longer.
It’s the naturally derived form of pyrethrin, which, like boric acid, is deadly to insects, but has very low toxicity to humans and other mammals.
Pyrethrum is extracted from chrysanthemum flowers; pyrethrin is created in a lab.
Pyrethrin and its synthetic derivatives are used in garden insecticides, pet sprays, mosquito repellents and lice shampoos.
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