allethrin

[ al-uh-thrin ]
/ ˈæl ə θrɪn /

noun Chemistry.

a clear, amber, viscous liquid, C19H26O3, used as an insecticide.

Origin of allethrin

1945–50; all(yl) + (pyr)ethrin, equivalent to Pyrethr(um) name of a genus of composite plants + -in2

British Dictionary definitions for allethrin

allethrin
/ (æˈlɛθrɪn) /

noun

a clear viscous amber-coloured liquid used as an insecticide and synergist. Formula: C 19 H 26 O 3; relative density: 1.005

Word Origin for allethrin

C20: from all ( yl) + ( pyr) ethrin