'Melasma' definitions:

Definition of 'melasma'

From: WordNet
noun
A tan discoloration of a woman's face that is associated with pregnancy or with the use of oral contraceptives [syn: chloasma, melasma, mask of pregnancy]

Definition of 'Melasma'

From: GCIDE
  • Melasma \Me*las"ma\, n. [NL., fr. Gr. ? black spot.] (Med.) A dark discoloration of the skin, usually local; as, Addison's melasma, or Addison's disease. -- {Me*las"mic}, a. [1913 Webster]