Dalton
/ˈdɒltən/
Proposed by a contributor, not yet supported by evidence.
Also seen as: Daltons
Sense 1
Meaning · English
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)
Noun
Sources & notes
Adapted from English Wiktionary (CC BY-SA 4.0, retrieved 2026-08-01 via kaikki.org).
Sense 2
Meaning · English
the atomic mass unit
Noun
Sources & notes
Adapted from English Wiktionary (CC BY-SA 4.0, retrieved 2026-08-01 via kaikki.org).
Common questions
What does “Dalton” mean?
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)
Is “Dalton” formal or informal?
No register label has been reviewed yet — treat it as neutral and check the usage notes above.