dibenzopyranWiktionary 原文英美构词拆解didi-前缀benzobenzo-前缀pyranpyran词干di-Two. · Double, twice the quantity.benzo-(organic chemistry) Related to benzene or benzoic acid.词源说明From di- + benzo- + pyran.释义名词noun1(organic chemistry) Either of two isomeric tricyclic aromatic heterocycles formed by the fusion of two benzene rings to one of pyran