| pyrethrin | <chemistry> A substance resembling, and isomeric with, ordinary camphor, and extracted from the essential oil of feverfew. Synonym: Pyrethrum camphor. Origin: NL. Pyrethrum, generic name of feverfew, Gr. Feverfew. Source: Websters Dictionary (01 Mar 1998) |
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| pyrethrine | <chemistry> An alkaloid extracted from the root of the pellitory of Spain (Anacyclus pyrethrum). Source: Websters Dictionary (01 Mar 1998) |
| pyrethrins | <chemical> The active insecticidal constituent of pyrethrum flowers. Pyrethrin I is the pyretholone ester of chrysanthemummonocarboxylic acid and pyrethrin II is the pyretholone ester of chrysanthemumdicarboxylic acid monomethyl ester. Pharmacological action: insecticide, botanical. (12 Dec 1998) |
Synonyms : Pyrethroids
| pyrethrin |
One of the family of individual chemicals present in pyrethrin which give it insecticidal properties. Increasingly the term is also used in reference to synthetically manufactured chemicals which are similar to natural pyrethrins. Some of these synthetic pyrethrins are actually much more toxic and persistent than natural pyrethrins. Pyrethrins are commonly used in aerosol sprays for controlling fleas, ants, flies, bees, and other common household insects.
출처: www.georgiastrait.org/toxicglossary3.php
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| pyrethrin |
insecticide formulations derived from the pyrethrum plant. These are less toxic and more biodegradable than some of the more synthetic organophosphorous insecticides
출처: eies.njit.edu/~kebbekus/definitions_for_chapter_7....
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| pyrethrin |
Active ingredient used in many flea and tick products. Pyrethrins are extracts of a species of Chrysanthemum, which act on the insects' central nervous system and are relatively safe.
출처: www.farnampet.com/tips/glossary.php
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