Polycyclic may refer to:
*
Polycyclic compound
In the field of organic chemistry, a polycyclic compound is an organic compound featuring several closed ring (chemistry), rings of atoms, primarily carbon. These ring substructures include cycloalkanes, aromaticity, aromatics, and other ring ...
, a cyclic compound with more than one hydrocarbon loop or ring structures, including:
**
Polycyclic musks
**
Polycyclic aromatic hydrocarbon
A Polycyclic aromatic hydrocarbon (PAH) is any member of a class of organic compounds that is composed of multiple fused aromatic rings. Most are produced by the incomplete combustion of organic matter— by engine exhaust fumes, tobacco, incine ...
***
Chlorinated polycyclic aromatic hydrocarbon
***
Contorted polycyclic aromatic hydrocarbon
*
Polycyclic group, in mathematics, a solvable group that satisfies the maximal condition on subgroups
*
Polycyclic spawning, when an animal reproduces multiple times during its lifespan
{{disambig