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mass number

Noun CEFR B2

Definitions

The total number of protons and neutrons in an atomic nucleus. Symbol: A

physical

Equivalents

11 more languages

CEFR level

B2
Upper Intermediate
This word is part of the CEFR B2 vocabulary — upper intermediate level.
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See also

mass of maneuver mass priest mass production mass shift mass shooter mass shooting

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