英和和英

語源

古期英語 peretreo, from (かつ later reformed after) Latin pyrethrum (in Pliny), from Hellenistic Ancient Greek πύρεθρον (púrethron).

発音

• (米国発音) IPA^(key): /paɪˈɹiθɹəm/

名詞

pyrethrum (countable かつ uncountable, 複数形 pyrethrums)

1. Any of several daisy-like perennial African plants of the genus Tanacetum, especially Tanacetum cinerariifolium. [from 10th c.]
   • 1986, Ngũgĩ wa Thiong'o, Decolonising the Mind, Heinemann 2005, p. 10:

     We children would re-tell the stories the following day to other children who worked in the fields picking the pyrethrum flowers, tea-leaves or coffee beans of our European and African landlords.

2. Anacyclus pyrethrum (pellitory of Spain)
3. (organic chemistry) Any of several insecticides obtained from these plants; pyrethrin.