pyrethrums

📖 中文释义

  1. (pyrethrum 的复数) n.[植]除虫菊, [药]除虫菊杀虫剂

🧩 词形变化

原形 pyrethrum
📘 English Definition（英文释义）
  1. plural of pyrethrum
  2. n made of dried flower heads of pyrethrum plants
  3. 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
  4. 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
  5. n used in former classifications for plants later placed in genus Chrysanthemum and now often included in genus Tanacetum
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