polycyclic
/ˌpɒlɪˈsaɪklɪk/adjective
1- of, relating to, or resulting from many cycles多轮的。
1.1
- Chemistry (of an organic compound) having several rings of atoms in the molecule【化】多环的。
1.2
- Geology (of a landform or deposit) having undergone two or more cycles of erosion and deposition【地质】（地形, 沉积）多轮侵蚀的; 多轮沉积的。