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Webster's Dictionary (1865)

Dis-cōl'or-ā'tion, n.

noun

Dis-cōl'or-ā'tion, n. [O. Fr. descoloration, now décoloration, Pr. descoloracio, It. discolorazione.]

  1. The act of discoloring or the state of being discolored; alteration of hue or appearance.
  2. Discolored spot; stain.