Meaning of two-color

two-col•or

Pronunciation: (t'kul"ur), [key]
— adj.
  1. having or using two colors.
  2. noting or pertaining to a photomechanical process similar to the three-color process, but using only two primary or secondary colors.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.