di·a·zo·ni·um /ˌdaɪəˈzoniəm/ 重氮; 重氮基
di·a·zo·ni·um /ˌdaɪəˈzonɪəm/ 名詞 重氮基
diazonium n : the univalent cation R-N:N- (where R is an aromatic hydrocarbon); found in salts that are used in manufacturing azo dyes