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PYRETHRUM

Definition:

1. [noun] made of dried flower heads of pyrethrum plants
   
   
2. [noun] white-flowered pyrethrum of Balkan area whose pinnate leaves are white and silky-hairy below; source of an insecticide; sometimes placed in genus Chrysanthemum
   Synonyms: Dalmatian Dalmatia Tanacetum cinerariifolium, Chrysanthemum cinerariifolium
   
   
3. [noun] 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
   Synonyms: painted daisy, Tanacetum coccineum, Chrysanthemum coccineum
   
   
4. [noun] used in former classifications for plants later placed in genus Chrysanthemum and now often included in genus Tanacetum
   Synonyms: Pyrethrum, genus Pyrethrum
   
   

Synonyms:

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