(medicine, pathology) Inability or defective ability to perceive or distinguish certain colors, especially red-green color blindness. / Achromatopsia.

Alternative letter-case form of Daltonism

(physics) the atomic mass unit

A habitational surname from Old English. / John Dalton, English chemist. / A male given name transferred from the surname. / A hamlet in Burton-in-Kendal parish, Cumbria, England (OS grid ref SD5476).

(chemistry) a former unit of atomic mass equivalent to 1/16 the mass of an oxygen atom; now replaced by the atomic mass unit (or dalton)

plural of dalton

Suffering from Daltonism; colour blind, especially red-green colour blind.

Of or pertaining to the chemist John Dalton, Daltonian. / Colour blind, especially red-green colour blind.

plural of Dalton

(chemistry, physics) The total pressure of a mixture or gases is the sum of the partial pressures of each gas in the mixture; it is only true for ideal gases.