Definitions for daltonˈdɔl tn
Random House Webster's College Dictionary
Ref: atomic mass unit .
Origin of dalton:
1935–40; after J. Dalton
John, 1766–1844, English chemist and physicist.
Dal•to′ni•an-ˈtoʊ ni ən(adj.)
Dalton, John Dalton(noun)
English chemist and physicist who formulated atomic theory and the law of partial pressures; gave the first description of red-green color blindness (1766-1844)
the atomic mass unit
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)
Any of several places in the north of England and in Scotland
John Dalton, English chemist.
transferred from the surname.
Origin: dæl “valley” + tun “settlement”.