What does "atomic mass unit" mean?

A unit of mass equal to 1/12 the mass of an atom of ¹²C (carbon-12, an isotope of carbon).

What is a synonym for "atomic mass unit"?

Common synonyms include: dalton.

noun

noun ·Rare ·Advanced level

Noun

1
A unit of mass equal to 1/12 the mass of an atom of ¹²C (carbon-12, an isotope of carbon). physical
2
unit of mass for expressing masses of atoms or molecules wordnet