IPA: //ˈsaɪkloʊˌdaɪ.iːn//
KK: /ˈsaɪkloʊˌdaɪin/
A type of chemical compound used as an insecticide, made from a specific structure that includes a chlorinated group and a carbon ring.
Cyclodiene compounds like dieldrin were widely used in agriculture to control pests.
Cyclodiene → It is formed from "cyclo-" (from Greek "kyklos", meaning circle) and "diene" (from Greek "dienos", meaning two double bonds). The word refers to a chemical compound that has a circular structure with two double bonds.
Think of a 'circle' ('cyclo-') that has 'two double bonds' ('diene') — that's what cyclodiene describes in chemistry.
No commonly confused words.