pyrethrum

Fetched 2026-10-26 (cache).

Synonyms: plethrum, pyrethrin, pyrethrums

Antonyms: plethrum, pyrethrin, pyrethrums

Related words from Datamuse; suggestions, not definitions.

Noun

1. Any of several [[daisy]]-like [[perennial]] [[African]] plants of the genus {{taxfmt|Tanacetum|genus}}, especially {{taxlink|Tanacetum cinerariifolium|species}}. {{defdate|from 10th c.}}
2. {{taxfmt|Anacyclus pyrethrum|species}} ([[pellitory of Spain]])
3. {{lb|en|organic compound}} Any of several [[insecticide]]s obtained from these plants; [[pyrethrin]].

Source: Wiktionary · CC BY-SA 4.0 (Wiktionary dump) · cached copy, not a rewrite.