| 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) |
| pyrethroids | Synthetic pyrethrin derivatives that are used as insecticides; as a class these agents are less toxic to mammals than are other effective insecticides. (05 Mar 2000) |
| pyrethrolone | 2-Methyl-4-oxo-3-(2,4-pentanedienyl)-2-cyclopentenol, a constituent of the pyrethrins. (05 Mar 2000) |
| pyrethrum | <plant biology> A natural insecticide that is extracted from chrysanthemums. It is atoxic, nonvolatile hydrocarbon related to kerosene. (09 Oct 1997) |
| pyretic | <medicine> Of or pertaining to fever; febrile. Origin: Gr. Burning heat, fever, from fire: cf. F. Pyretique. Source: Websters Dictionary (01 Mar 1998) |
| pyreto- | Fever. See: pyr-, pyro-. Origin: G. Pyretos, fever, fr. Pyr, fire (05 Mar 2000) |
| pyretogen | Rarely used term for pyrogen. Origin: pyreto-+ G. -gen, producing (05 Mar 2000) |
| pyretogenesis | Rarely used term for the origin and mode of production of fever. Origin: pyreto-+ G. Genesis, origin (05 Mar 2000) |
| pyretogenetic | <physiology> Fever inducing. Origin: Gr. Gennan = to produce (18 Nov 1997) |
| pyretogenous | 1. Causing fever. Synonym: pyrogenic. (05 Mar 2000) |
| pyretology | <study> A discourse or treatise on fevers; the doctrine of fevers. Origin: Gr. Fever: cf. F. Pyretologie. Source: Websters Dictionary (01 Mar 1998) |
| pyretotherapy | 1. Obsolete synonym for pyrotherapy. 2. Treatment of fever. Synonym: artificial fever, induced fever. Origin: pyreto-+ G. Therapeia, treatment (05 Mar 2000) |
Synonyms : Pyrethroids
| Pyrethrum |
made of dried flower heads of pyrethrum plants white-flowered pyrethrum of Balkan area whose pinnate leaves are white and silky-hairy below; source of an insecticide; sometimes placed in genus Chrysanthemum painted daisy: spring-flowering garden perennial of Asiatic origin having finely divided aromatic leaves and white to pink-purple flowers; source of an insecticide; sometimes placed in genus Chrysanthemum used in former classifications for plants later placed in genus Chrysanthemum and now often included in genus Tanacetum
Ãâó: wordnet.princeton.edu/perl/webwn
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| pyretic |
causing fever
Ãâó: wordnet.princeton.edu/perl/webwn
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| pyretic |
This is a fever-inducing agent.
Ãâó: www.cedarvale.net/information/medicalterms.htm
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| 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.
Ãâó: 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
Ãâó: eies.njit.edu/~kebbekus/definitions_for_chapter_7....
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| pyret | used in former classifications for plants later placed in genus Chrysanthemum and now often included in genus Tanacetum |
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| pyret | spring-flowering garden perennial of Asiatic origin having finely divided aromatic leaves and white to pink-purple flowers |
| pyret | white-flowered pyrethrum of Balkan area whose pinnate leaves are white and silky-hairy below |
| pyret | made of dried flower heads of pyrethrum plants |
| pyret | causing fever |
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