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Wiktionary
polycyclic

a. (context chemistry English) Having two or more rings of atoms in the molecule. n. Such a compound

Wikipedia
Polycyclic

Polycyclic may refer to:

  • Polycyclic compound, in organic chemistry, a cyclic compound with more than one hydrocarbon loop or ring structures
  • Polycyclic group, in mathematics, a solvable group that satisfies the maximal condition on subgroups

Usage examples of "polycyclic".

All the compounds were polycyclic aromatics - carbon atoms in six-packs, twelve-packs, and cases.

Because it is the refractory tars in which polycyclic aromatic hydrocarbons and some other carcinogens are concentrated.

The cargo scows broke up into thousands of robot-guided missiles with Bergenholm drives, polycyclic drills and atomic warheads.

Kelvin was doing organic chemistry, diagramming a lot of polycyclic stuff.