Source : Webster's Revised Unabridged Dictionary (1913)

Pallor \Pal"lor\, n. [L., fr. pallere to be or look pale. See
   {Pale}, a.]
   Paleness; want of color; pallidity; as, pallor of the
   complexion. --Jer. Taylor.

Source : WordNet®

pallor
     n : unnatural lack of color in the skin (as from bruising or
         sickness or emotional distress) [syn: {lividness}, {lividity},
          {luridness}, {paleness}, {pallidness}, {wanness}, {achromasia}]