Meaning of BRIGHTNESS in English

BRIGHTNESS

n.

Function: noun

Date: before 12th century

1 a : the quality or state of being bright also : an instance of such a quality or state b : LUMINANCE

2 : the attribute of light-source colors by which emitted light is ordered continuously from light to dark in correlation with its intensity ― compare HUE 2c 1 LIGHTNESS 2 SATURATION 4

Merriam Webster Collegiate English Dictionary.      Merriam Webster - Энциклопедический словарь английского языка.