Learn how to say Polycyclical correctly in English with this tutorial pronunciation video.
Oxford dictionary definition of the word polycyclic:
relating to or resulting from many cycles.
Chemistry (of an organic compound) having several rings of atoms in the molecule:
polycyclic aromatic hydrocarbons
Geology (of a landform or deposit) having undergone two or more cycles of erosion and deposition:
there is evidence for polycyclic material in both samples