| pyrethrum | <plant biology> A natural insecticide that is extracted from chrysanthemums. It is atoxic, nonvolatile hydrocarbon related to kerosene. (09 Oct 1997) |
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| 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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| Pyrethrum |
Natural insecticide made from the blossoms of various chrysanthemums: Raid
Ãâó: www.interiorgardens.com/glossary/glossary.html
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| pyrethrum e. |
[USP] a mixture of pyrethrin I and pyrethrin II, used as a pediculicide.
Ãâó: www.mercksource.com/pp/us/cns/cns_health_library.j...
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| Pyrethrum |
The insecticide that is extracted from marigolds. (synthetic form is permethrin)
Ãâó: www.solutions-site.org/reference/glossary.htm
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| pyrethrum | used in former classifications for plants later placed in genus Chrysanthemum and now often included in genus Tanacetum |
|---|---|
| pyrethrum | spring-flowering garden perennial of Asiatic origin having finely divided aromatic leaves and white to pink-purple flowers |
| pyrethrum | white-flowered pyrethrum of Balkan area whose pinnate leaves are white and silky-hairy below |
| pyrethrum | made of dried flower heads of pyrethrum plants |
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