from The American Heritage® Dictionary of the English Language, 4th Edition
- Dalton, John 1766-1844. British chemist whose pioneer work on the properties of gases led to his formulation of the atomic theory. He also studied his own condition of colorblindness.
- Dalton, Robert 1867-1892. American outlaw noted for his exploits as a horse thief, train robber, and leader of the Dalton gang, which included his two brothers.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- proper n. Any of several places in the north of England and in Scotland
- proper n. A habitational surname.
- proper n. John Dalton, English chemist.
- proper n. A male given name transferred from the surname.
- n. 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)
Old English dæl “valley” + tun “settlement”. (Wiktionary)