mass number
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About Our Definitions: All forms of a word (noun, verb, etc.) are now displayed on one page.mass number
nounDefinition of MASS NUMBER
: an integer that approximates the mass of an isotope and designates the number of nucleons in the nucleus
See First Known Use of MASS NUMBER
1923
mass number
noun (Medical Dictionary)Medical Definition of MASS NUMBER
: an integer that approximates the mass of an isotope and that designates the number of nucleons in the nucleus <the symbol for carbon of mass number 14 is 14C or C14>—compare atomic mass
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