Phenotype:

A phenotype is a description of your physical characteristics, including things that are not visible (like hearing loss or vision problems). For example, your phenotype might be: blonde hair, blue eyes, tall height, and nearsightedness.

The phenotype of the woman without Waardenburg syndrome below is blonde hair, blue eyes, a cleft lip and cleft palate (now surgically repaired).

The phenotype of the man with Waardenburg syndrome below includes gray hair, blue eyes, and hearing loss in his right ear.