Mass Number Definition
The number of neutrons and protons in the nucleus of an atom: the approximate mass of a given nucleus is obtained by multiplying the mass number by the fundamental unit of mass, 1.6605 × 10-24 grams (112 the mass of C12 atom)
Webster's New World
Other Word Forms of Mass Number
Mass Number Is Also Mentioned In
Find Similar Words
Find similar words to mass number using the buttons below.
Words Starting With M and Ending With R