ALL meanings of atomic mass unit
a·tom·ic mass u·nit
A a - noun atomic mass unit a unit of mass used to express atomic and molecular weights that is equal to one twelfth of the mass of an atom of carbon-12. It is equivalent to 1.66 × 10–27 kg 3
- noun atomic mass unit a unit of mass, exactly one twelfth the mass of a neutral atom of the most abundant isotope of carbon, C12: one atomic mass unit equals 1.6605 x 10-24 gram and is equivalent to 931.48 MeV in energy: symbol amu or u 3
- noun atomic mass unit Also called dalton. a unit of mass, equal to 1/12 (0.0833) the mass of the carbon-12 atom and used to express the mass of atomic and subatomic particles. 1
- noun atomic mass unit (formerly) a unit of mass, equal to 1/16 (0.0625) the mass of an oxygen atom having atomic mass 16. Abbreviation: amu, AMU. 1
- noun atomic mass unit (chemistry) A unit of mass equal to 1/12 the mass of an atom of the 12C isotope of carbon. 0