Greyscale vs. Grayscale — What's the Difference?

A range of grey shades from white to black, as used in a monochrome display or printout

In digital photography, computer-generated imagery, and colourimetry, a greyscale image is one in which the value of each pixel is a single sample representing only an amount of light; that is, it carries only intensity information. Greyscale images, a kind of black-and-white or grey monochrome, are composed exclusively of shades of grey.

Alternative spelling of grayscale.

A series of shades ranging from pure white to pure black, used in displaying monochromatic images.

Alternative spelling of grayscale.

An image displayed using such a series of shades.

Alternative spelling of grayscale.

(photography) A printed strip of graduated tones used to check exposure and development times.

(imaging) The use of black and white, representing color with shades of gray.

(imaging) Black and white, representing color with shades of gray.

(transitive) To convert to grayscale.