1. something that corresponds to or has the same relative position, structure, or function as something else
Usage: biology; chemistry
2. a gene or chromosome that corresponds to another gene or chromosome
Usage: genetics

Examples

• The human arm is a homologue of the bird’s wing.
• Scientists compared the protein homologues across different species.
• Each chromosome has a homologue from the other parent.
• The researcher identified homologues of the gene in mice.
• These enzymes are homologues with similar catalytic functions.
• The fossil showed clear homologues to modern vertebrate structures.