polycyclic

Having two or more atomic rings in a molecule.

Having many rounds, turns, or whorls, as a shell.

In electricity, noting a system of electric distribution by alternating currents, in which the energy maxima of the flow of power of the different circuits overlap so as to give a total flow of power of constant intensity. This is the case in a symmetrical or hemisymmetrical polyphase system. See polyphase.

In chem., containing more than one atomic ring in the molecule.

Having two or more rings of atoms in the molecule.

Such a compound