Definition of Young–Helmholtz in US English:



  • Attributive Designating the theory that in the eye there are receptors of three types, each sensitive to a particular range of visible light (in humans centred on red, green, and blue), and that every colour sensation is due to the stimulation of these in different proportions.


Late 19th century; earliest use found in American Journal of the Medical Sciences. From the names of Thomas Young and H. L. F. von Helmholtz.