pyrethroid

[ pahy-ree-throid, -reth-roid ]

noun

, Chemistry.

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

pyrethroid

/ paɪˈriːθrɔɪd /

noun

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

adjective

1. of or relating to such compounds

Word History and Origins

Origin of pyrethroid¹

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

Example Sentences

"Though considered to have low acute human toxicity, occupational exposure or accidental exposure through ingestion of pyrethroid insecticides may lead to dermal irritation, nausea and vomiting, and dizziness," the authors report.

From Salon

Testing also revealed the pyrethroid insecticides cypermethrin and bifenthrin.

From Salon

But in recent years, resistance to the insecticide used to treat nets, pyrethroid, has been spreading.

From Science Magazine

The new nets are treated with pyrethroid and a second chemical called chlorfenapyr.

From Science Magazine

That prompted WHO on 14 March to strongly recommend their use in regions where pyrethroid resistance has spread.

From Science Magazine