Dalton Dale • Damon · · · Info · Definitions · Characters · · Dalton · · Text Latin · · Script 6 · · Length Definitions · · · (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). Synonyms: John Dalton. · · Noun Definition 1 Characters · · D latin capital letter d U+0044 a latin small letter a U+0061 l latin small letter l U+006C n latin small letter n U+006E o latin small letter o U+006F t latin small letter t U+0074