allethrin

[al-uh-thrin]
noun Chemistry.
a clear, amber, viscous liquid, C 19 H 26 O 3 , used as an insecticide.

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

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World English Dictionary
allethrin (æˈlɛθrɪn)
 
n
a clear viscous amber-coloured liquid used as an insecticide and synergist. Formula: C19H26O3; relative density: 1.005
 
[C20: from all(yl) + (pyr)ethrin]

Collins English Dictionary - Complete & Unabridged 10th Edition
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Example sentences
Comparative acute and subacute toxicities of allethrin and pyrethrins.
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