halftone

• half-tone

half- +‎ tone

halftone (plural halftones)

1. (music) Synonym of semitone, half the interval between two notes on a scale.
2. (printing) A picture made by using the process of half-toning.
3. (art) An intermediate or middle tone in a painting, engraving, photograph, etc.; a middle tint, neither very dark nor very light.

halftone (third-person singular simple present halftones, present participle halftoning, simple past and past participle halftoned)

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

• OED2

• half note