pyrethrum
Nouns
- (n) made of dried flower heads of pyrethrum plants
- (n) white-flowered pyrethrum of Balkan area whose pinnate leaves are white and silky-hairy below; source of an insecticide; sometimes placed in genus Chrysanthemum Chrysanthemum cinerariifolium, Dalmatian pyrethrum, Dalmatia pyrethrum, Tanacetum cinerariifolium,
- (n) 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 Chrysanthemum coccineum, painted daisy, Tanacetum coccineum,
- (n) used in former classifications for plants later placed in genus Chrysanthemum and now often included in genus Tanacetum genus Pyrethrum,