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