| Pyrethrum (Plant) | ไพรีทรัม [TU Subject Heading] |
| pyrethrum | (n) made of dried flower heads of pyrethrum plants |
| pyrethrum | (n) 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. Chrysanthemum cinerariifolium, Dalmatia pyrethrum, Dalmatian pyrethrum, Tanacetum cinerariifolium |
| pyrethrum | (n) used in former classifications for plants later placed in genus Chrysanthemum and now often included in genus Tanacetum, Syn. genus Pyrethrum |