Definitions
from The American Heritage® Dictionary of the English Language, 5th Edition.
- noun The sum of the number of neutrons and protons in an atomic nucleus.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun physics The total number of
protons andneutrons in anatomic nucleus .
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- noun the sum of the number of neutrons and protons in an atomic nucleus
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