Definition of "halftone"

(music) Synonym of semitone, half the interval between two notes on a scale.  examples

(printing) A picture made by using the process of half-toning.  examples

(art) An intermediate or middle tone in a painting, engraving, photograph, etc.; a middle tint, neither very dark nor very light.  examples

To reproduce a photograph or other continuous tone image by the use of dots of various sizes.  examples