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Definition of Pyrethrin
1. n. A substance resembling, and isomeric with, ordinary camphor, and extracted from the essential oil of feverfew; -- called also Pyrethrum camphor.
Definition of Pyrethrin
1. Noun. (chemistry) Any of a number of naturally occurring insecticides extracted from the pyrethrum plant; unusual in having a cyclopropane ring. ¹
¹ Source: wiktionary.com
Definition of Pyrethrin
1. [n -S]
Lexicographical Neighbors of Pyrethrin
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