Loss of color from the hair

Wikipedia Word definitions in Wikipedia
Poliosis , also called poliosis circumscripta , is the decrease or absence of melanin (or color) in head hair, eyebrows, eyelashes or any other hairy area. This condition can cause single, or, less commonly, multiple, white patches on the hair. Some mistake ...

WordNet Word definitions in WordNet
n. loss of color from the hair

Wiktionary Word definitions in Wiktionary
n. The decrease or absence of melanin in head hair, eyebrows, or eyelashes.