Sentence:  On the basis of a comparison of calculated and measured IR data, the 2 B 2 state could undoubtedly be discarded in favor of a more <WSD>bicyclic</WSD> geometry 
Meaning of the word marked with <WSD> tags:  Having two rings of atoms in the molecule; the rings may be fused, as in naphthalene, or separate, as in biphenyl.