polycyclic adjective & noun. [pɒlɪ'sʌɪklɪk, -'sɪk-] M19.
[from POLY- + CYCLIC.]
A. adjective.
1. Math. Of a function: relating to more than one closed curve. M-L19.

2. Having or consisting of many rounds, turns, or whorls. L19.

3. Chemistry. Having more than one ring of atoms in the molecule. E20.

4. Electrical Engineering. Involving the simultaneous transmission along one conductor of currents of different frequencies and voltages. E20.

5. Geology. Produced by or having undergone many cycles, esp. of erosion and deposition. M20.

6. Biology. Producing several generations during a year by sexual reproduction. M20.
b. noun. Chemistry. A polycyclic compound. M20.

[TahlilGaran] English Dictionary ▲