词典收录词

pyrethrums

(pyrethrum 的复数) n.[植]除虫菊, [药]除虫菊杀虫剂

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pyrethrums 的中文释义

plural of pyrethrum
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