bicycloheptadiene

Noun

 * 1)  Any bicyclic hydrocarbon having seven carbon atoms and two double bonds, but especially the one formed from 1,3-cycloheptadiene by establishing a bridge between carbon atoms 5 and 7
 * 2)  Any cycloheptyl derivative of cycloheptadiene, but especially 6-cycloheptylcyclohepta-1,4-diene