Meaning of raster

ras•ter

Pronunciation: (ras'tur), [key]
— n.
  1. a pattern of scanning lines covering the area upon which the image is projected in the cathode-ray tube of a television set.
  2. a set of horizontal lines composed of individual pixels, used to form an image on a CRT or other screen.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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