<clinical sign> Absence or loss of pigment in the hair. ... (27 Sep 1997) ... 
Type: Term Pronunciation: ă-krō′mō-trik′ē-ă Definitions: 1. Absence or loss of pigment in the hair.
achromotrichia 1. Absence or loss of pigment (colored substances) in the hair. 2. A lack or deficiency of pigment in hair.