melasma Meaning, Definition & Usage

  1. noun a tan discoloration of a woman's face that is associated with pregnancy or with the use of oral contraceptives
    chloasma; mask of pregnancy.

WordNet

Me*las"ma noun
Etymology
NL., fr. Gr. black spot.
Definitions
  1. (Med.) A dark discoloration of the skin, usually local; as, Addison's melasma, or Addison's disease. -- Me*las"mic a.

Webster 1913