polycyclic

/P AA0 L IY0 S IH0 K L IH0 K/
noun
  1. 1

    A polycyclic compound.

adjective
  1. 1

    Involving more than one cycle.

  2. 2

    Having two or more rings of atoms in the molecule.

Source: https://en.wiktionary.org/wiki/polycyclic