pyrethrum

pyrethrum读音音标

英 [paɪˈri:θrəm]

美 [paɪ\'riθrəm]

pyrethrum意思解释

n.

除虫菊，除虫菊杀虫剂；

变形

复数：pyrethrums

英英释义

n.

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

同义词：Dalmatian pyrethrumDalmatia pyrethrumTanacetum cinerariifoliumChrysanthemum cinerariifolium

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

同义词：painted daisyTanacetum coccineumChrysanthemum coccineum

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

同义词：genus Pyrethrum

双语例句

用作名词(n.)This article draws up the pyrethrum ester insecticide.本品是拟除虫菊酯类杀虫剂。