Meaning of color temperature

col'or tem"perature

Pronunciation: [key]
— Optics, Photog. Optics,Photog.
  1. a temperature defined in terms of the temperature of a black body at which it emits light of a specified spectral distribution: used to specify the color of a light source.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.