Physics. attributive and in the genitive. Designating or relating to physical phenomena, concepts… a scale devised by Newton which records the…

A measure or scale of colours.

A regular series of tones or shades of colour produced by mixing with different proportions of white or black. (Cf. Italian scala di colori.)

(a) n. (now esp. with reference to digital images) a graded series of grey tints or tones extending from black or dark grey to white or light grey…