環かん式しき化か合ごう物ぶつかんしきかごうぶつMeanings1nouncyclic compound; ring compoundchemistryTechnical term in chemistry for a compound whose atoms form a ring structure.ベンゼンは代だい表ひょう的てきな環かん式しき化か合ごう物ぶつです。Benzene is a typical cyclic compound.