diazafluoreneWiktionary 原文英美构词拆解didi-前缀azaaza-前缀fluorenefluorene词干di-Two. · Double, twice the quantity.aza-(organic chemistry) Used to form names of organic compounds where a carbon atom is replaced by a nitrogen atom.词源说明From di- + aza- + fluorene.释义名词noun1(organic chemistry) Any of several isomeric tricyclic aromatic heterocycles derived from fluorene by replacement of two CH groups by nitrogen atoms