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Mass Number

nounid 95259·updated May 18, 2026
verified

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

MWE

Classifications

Entity Type

Unknownauthoritativeglossary_import_default_pending_classifier

Sensitivity

unclassified

Information Class

unclassified

Variants

synonym
nucleon number
plural
Mass Numbers
possessive
Mass Number's
pluralpossessive
Mass Numbers'

Framework definitions

Wordset Dictionary1 senseview framework →
§1
the sum of the number of neutrons and protons in an atomic nucleus

Outgoing relationships

No outgoing triples
This term is not the subject of any RDF-style relationship yet.

Incoming relationships

No incoming triples
No other term currently asserts a relationship to this one.