pyrethrum
演变路径（由近及远）
词源说明
From Old English pyretre, from (and later reformed after) Latin pyrethrum (in Pliny), from Hellenistic Ancient Greek πύρεθρον (púrethron).
释义（英文）
名词 Noun
- Any of several daisy-like perennial African plants of the genus Tanacetum, especially Tanacetum cinerariifolium. [from 10th c.]
- Anacyclus pyrethrum (pellitory of Spain)
- (organic chemistry) Any of several insecticides obtained from these plants; pyrethrin.