halftone

1 :  half step 2

2a :  any of the shades of gray between the darkest and the lightest parts of a photographic imageb (1) :  a photoengraving made from an image photographed through a screen and then etched so that the details of the image are reproduced in dots (2) :  an image (such as one printed on an offset press or laser printer) that renders smooth variations of color in an original by means of dots assigned to areas of the image electronically