Chiaroscuro

adj. of the method of depicting light and shade in a picture

n. artistic use of light and shade to create dramatic effect (in a picture or painting)

For other use of the term, see Chiaroscuro (disambiguation). Chiaroscuro (Italian for clear-dark) is a term in art for a  contrast between light and dark. The term is usually applied to bold contrasts affecting a whole composition, but is also more technically used by artists and art historians for the use of effects representing contrasts of light, not necessarily strong, to achieve a sense of volume in modelling three-dimensional objects such as the human body. Further specialised uses of the term are "chiaroscuro woodcut", used for coloured woodcuts printed with different blocks, each using a different coloured ink, and "chiaroscuro drawing" used for drawings on coloured paper with drawing in a dark medium and white highlighting. The term is now also used in describing similar effects in the lighting of cinema and photography.
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Noun
1. a monochrome picture made by using several different shades of the same color
(hypernym) picture, image, icon, ikon
(hyponym) grisaille

n. chiaroscuro, use of light and shade to create dramatic effect (in a picture or painting)

v. shade, add shading to, change gradually (in painting)

(n.)
Alt. of Chiaro-oscuro