Pyrethrum
1.
(
noun
) used in former classifications for plants later placed in genus Chrysanthemum and now often included in genus Tanacetum
Synonyms:
genus Pyrethrum
Related Words:
asterid dicot genus
2.
(
noun
) white-flowered pyrethrum of Balkan area whose pinnate leaves are white and silky-hairy below; source of an insecticide; sometimes placed in genus Chrysanthemum
Synonyms:
Chrysanthemum cinerariifolium
,
Dalmatia pyrethrum
,
Dalmatian pyrethrum
,
Tanacetum cinerariifolium
Related Words:
herb
,
herbaceous plant
3.
(
noun
) made of dried flower heads of pyrethrum plants
Related Words:
insect powder
,
insecticide
4.
(
noun
) spring-flowering garden perennial of Asiatic origin having finely divided aromatic leaves and white to pink-purple flowers; source of an insecticide; sometimes placed in genus Chrysanthemum
Synonyms:
Chrysanthemum coccineum
,
Tanacetum coccineum
,
painted daisy
Related Words:
flower
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