D defs.my
Entry 2 senses Webster, 1913

Discoloration

/dĭs-kŭlˌ-ẽr-āsh'-ən/ · Dis·col·or·a·tion · IPA /dɪskˌʌlərˈeɪʃən/
01 n. The act of discoloring, or the state of being discolored; alteration of hue or appearance.
  1. 1.
    The act of discoloring, or the state of being discolored; alteration of hue or appearance.
  2. 2.
    A discolored spot; a stain.