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Definition 2024
pyrethrum
pyrethrum
English
![](http://llc12.www.definify.com/images_main/Tanacetum_cinerariifolium1.jpg)
Tanacetum cinerariifolium
Tanacetum cinerariifolium
Noun
pyrethrum (plural pyrethrums)
- Any of several daisy-like perennial African plants of the genus Tanacetum, especially Tanacetum cinerariifolium
- (organic chemistry) Any of several insecticides obtained from these plants; pyrethrin