atomic mass unit

noun

Definition of atomic mass unit

:a unit of mass for expressing masses of atoms, molecules, or nuclear particles equal to ¹/₁₂ the mass of a single atom of the most abundant carbon isotope 12C called also dalton

First Known Use of atomic mass unit

circa 1942


Medical Dictionary

atomic mass unit

noun

medical Definition of atomic mass unit

:a unit of mass for expressing masses of atoms, molecules, or nuclear particles equal to ¹/₁₂ the mass of a single atom of the most abundant carbon isotope 12C called also dalton


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