IPA: //ˈsaɪkləˌproʊpeɪn//
KK: /ˈsaɪkləˌproʊpeɪn/
A colorless gas that is highly flammable and can be explosive, often used in medical settings as an anesthetic.
Cyclopropane is sometimes used in surgeries as an anesthetic due to its properties.
Cyclopropane is formed from "cyclo-" (from Greek "kyklos", meaning circle) and "propane" (from the Greek "propanon", meaning a three-carbon alkane). The word describes a three-carbon alkane arranged in a circular structure.
Imagine a 'circle' ('cyclo-') made of 'three' ('propane') carbon atoms — that's what cyclopropane is.
No commonly confused words.