pyrethroid

American  

[pahy-ree-throid, -reth-roid] / paɪˈri θrɔɪd, -ˈrɛθ rɔɪd /

noun

Chemistry.

1. any of several synthetic compounds that are similar to but more persistent than natural pyrethrins.

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pyrethroid British  

/ paɪˈriːθrɔɪd /

noun

1. any of various chemical compounds having similar insecticidal properties to pyrethrin

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adjective

1. of or relating to such compounds

Etymology

Origin of pyrethroid

First recorded in 1950–55; pyrethr(in) + -oid

Example Sentences

That’s why California’s $1.7-billion citrus industry is willing to do whatever it takes to destroy the disease-spreading psyllid, such as spraying the trees with pyrethroid and neonicotinoid pesticides, which are toxic to bees.

From Los Angeles Times

That’s why California’s $1.7-billion citrus industry is willing to do whatever it takes to destroy the disease-spreading psyllid, such as spraying the trees with pyrethroid and neonicotinoid pesticides that are toxic to bees.

From Los Angeles Times

Researchers tested pyrethroid levels in urine samples from 2,116 adults selected from a large national health survey.

From New York Times

The emergence of strong pyrethroid resistance in West African populations of A. gambiae6 prompted Ingham et al. to search for more mediators of resistance.

From Nature

The first identified mechanism of pyrethroid resistance in wild Anopheles populations was a phenomenon called knockdown resistance, which involves mutations in a voltage-gated sodium channel protein that reduce neuronal sensitivity to the insecticide4.

From Nature