- (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)
- w:John Dalton, John Dalton, English chemist
- any of several place names in the north of England and in Scotland
- (given name, male) from the surname.
- Habitational surname from Old English díl "valley" + tun "settlement".
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