pyrethrum

English - Turkish

Definition of pyrethrum in English Turkish dictionary

pirekapan

pireotu

{i} pire otu

i., bot. pireotu, pirekapan, nezleotu

(Tıp) Bir çeşit böcek öldürücü ilaç, insektisid

(isim) pire otu

nezleotu

Related Terms

pyrethrum powder

böcek ilacı

English - English

Definition of pyrethrum in English English dictionary

a perennial African plant, Chrysanthemum cinerariaefolium, that is the source of the pyrethrin insecticides

{i} type of flower, any of several varieties of chrysanthemum

white-flowered pyrethrum of Balkan area whose pinnate leaves are white and silky-hairy below; source of an insecticide; sometimes placed in genus Chrysanthemum

used in former classifications for plants later placed in genus Chrysanthemum and now often included in genus Tanacetum white-flowered pyrethrum of Balkan area whose pinnate leaves are white and silky-hairy below; source of an insecticide; sometimes placed in genus Chrysanthemum made of dried flower heads of pyrethrum plants

made of dried flower heads of pyrethrum plants

Any of certain plant species of the genus Chrysanthemum (see chrysanthemum) native to South Asia, whose aromatic flower heads, when powdered, constitute the active ingredient in the insecticide pyrethrin (or pyrethrum). The concentrations of pyrethrum powder used in insecticides are nontoxic to plants and higher animals; these insecticides therefore find wide use in household and livestock sprays as well as in dusts for edible plants. The typical species, the perennial C. coccineum, also is the florists' pyrethrum, or painted lady. Large petals of a deep rose colour surrounding the yellow centre, or disk, are borne on long simple stems above the crown of finely cut leaves

Natural insecticide made from the blossoms of various chrysanthemums: Raid’s Pyrethrum is the most effective natural spider mite exterminator

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

used in former classifications for plants later placed in genus Chrysanthemum and now often included in genus Tanacetum

A natural insecticide made from several insecticides called pyrethrins Pyrethrum powder is produced from the flower heads of two species of chrysanthemum grown in the highlands of Africa, South America, and southeast Asia; low toxicity to people and pets

Hyphenation

py·re·thrum

Etymology

[ pI-'rE-thr&m, -'re- ] (noun.) circa 1543. Latin, pellitory, from Greek pyrethron, from pyr fire.