ふくそかん 複素環 LinksSentence search for 複素環Sentence search for ふくそかんKanji details for 複, 素 and 環Edit in JMdict Noun, Noun which may take the genitive case particle 'no'1. heterocycleChemistry, See also 複素環式化合物 ふくそかんしきかごうぶつ Discussions Log in to talk about this word.