allethrin, n.
(əˈliːθrɪn)
[f. allyl + pyrethrin n.]
A pyrethroid compound, C19H26O3 , used as a contact insecticide against household pests.
| 1950 J. B. Moore in Jrnl. Econ. Entomol. XLIII. 207 Seven samples of the allyl analog of cinerin I (hereafter referred to as allethrin) were received from five different sources and were assayed. 1962 New Scientist 6 Dec. 577 A somewhat similar synthetic compound, allethrin,..has partially replaced natural pyrethrum. 1991 Worthing & Hance Pesticide Man. (ed. 9) 19 Formulations show higher efficacy than those of natural pyrethrins. In the case of liquid formulations, insecticidal activities of allethrin are enhanced by pyrethrin synergists. |