- a clear, amber, viscous liquid, C19H26O3, used as an insecticide.
Origin of allethrin
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- a clear viscous amber-coloured liquid used as an insecticide and synergist. Formula: C 19 H 26 O 3; relative density: 1.005
C20: from all (yl) + (pyr) ethrin