|bātˌsȯltˈbrikə-, -ruekə- noun
Usage: usually capitalized both Bs
Etymology: after Wilhelm von Bezold died 1907 German meteorologist and Ernst W. von Brücke died 1892 German physiologist
: the shift in the hue of colors that occurs when the intensity of the corresponding energy stimulus is materially increased, except in the case of the stimuli for certain invariable hues approximating the psychologically primary hues