(ˈ)bī|sīklik, -|sik- adjective
also bi·cy·cli·cal -klə̇kəl
Etymology: International Scientific Vocabulary bi- (I) + cyclic or cyclical
1. : consisting of or arranged in two cycles or circles
a bicyclic flower with the petals in two whorls
2. : containing two usually fused rings in the structure of the molecule (as in naphthalene)
a bicyclic terpene