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3 definitions found

From: DICT.TW English-Chinese Dictionary 英漢字典

 py·re·thrum /paɪˈriθrəm, ˈrɛ-/
 除蟲菊

From: DICT.TW English-Chinese Medical Dictionary 英漢醫學字典

 py·re·thrum /paɪˈrɪθrəm, ˈrɛθrəm/ 名詞

From: WordNet (r) 2.0

 pyrethrum
      n 1: made of dried flower heads of pyrethrum plants
      2: white-flowered pyrethrum of Balkan area whose pinnate leaves
         are white and silky-hairy below; source of an insecticide;
         sometimes placed in genus Chrysanthemum [syn: Dalmatian
          pyrethrum, Dalmatia pyrethrum, Tanacetum
          cinerariifolium, Chrysanthemum cinerariifolium]
      3: 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 [syn: painted daisy, Tanacetum
          coccineum, Chrysanthemum coccineum]
      4: used in former classifications for plants later placed in
         genus Chrysanthemum and now often included in genus
         Tanacetum [syn: genus Pyrethrum]