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atomic mass unit. In DICTIOUS you will not only get to know all the dictionary meanings for the word
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English
Noun
atomic mass unit (plural atomic mass units)
- (physical chemistry) A unit of mass equal to 1/12 the mass of an atom of 12C (carbon-12, an isotope of carbon).
Synonyms
Translations
a unit of mass equal to 1/12 the mass of an atom of the 12C isotope of carbon