Part of speech:
(Proscribed) atomic weight; the average mass of atoms of an element.
Attributive form of atomic number
The atomic volume is defined an element's atomic weight divided by its density.
Synonym of mass number.
Find another word for mass-number. In this page you can discover 5 synonyms, antonyms, idiomatic expressions, and related words for mass-number, like: atomic-mass, atomic-number, atomic volume, atomic-weight and nucleon-number.