Medical Dictionary
2 ENTRIES FOUND:

atomic mass

noun

Definition of ATOMIC MASS

:  the mass of an atom usually expressed in atomic mass units; also :  atomic weight—compare mass number
March 27, 2015
quiescent Hear it
Tranquilly at rest or causing no trouble
Take a 3-minute break and test your skills!
How to use a word that (literally) drives some people nuts.
Test your vocab with our fun, fast game
Ailurophobia, and 9 other unusual fears