pyrethroid

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

noun Chemistry.

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

Origin of pyrethroid

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

British Dictionary definitions for pyrethroid

pyrethroid
/ (paɪˈriːθrɔɪd) /

noun

any of various chemical compounds having similar insecticidal properties to pyrethrin

adjective

of or relating to such compounds