Definitions for "Heterocyclic"
a cyclic or ring structure in which one or more of the atoms in the ring is an element other than carbon, forming compounds such as amine, pyridine, pyrrole, furan, etc.
A cyclic or ring structure in which one or more of the atoms in the ring is an element other than carbon. (Common heterocyclics are pyridine, pyrrole, furan, thiophene, and purine.)
heterocycle; heterocyclic ring. An organic group or molecule containing rings with at least one noncarbon atom on the ring.