pyrethrum的中文意思、音标与词形变化

n. [植]除虫菊, [药]除虫菊杀虫剂

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 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 n used in former classifications for plants later placed in genus Chrysanthemum and now often included in genus Tanacetum