Involving more than one cycle.

Involving more than one cycle. / (chemistry) Having two or more rings of atoms in the molecule.

A polycyclic compound.

plural of polycyclic

(mathematics) A planar countably locally-finite graph in which all interior vertices have the maximum vertex degree and all interior faces are polygons with the same number of faces.

plural of polycycle

(organic chemistry) Any cyclization reaction in which many rings are formed

plural of polycyclization