MASS NUMBER

Pronunciation (US):

(GB):

 I. (noun) 

Sense 1

Meaning:

The sum of the number of neutrons and protons in an atomic nucleus

Synonyms:

mass number; nucleon number

Classified under:

Nouns denoting quantities and units of measure

Hypernyms ("mass number" is a kind of...):

mass unit (a unit of measurement for mass)

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