Medical Dictionary

atomic mass unit

noun

Definition of ATOMIC MASS UNIT

:  a unit of mass for expressing masses of atoms, molecules, or nuclear particles equal to 112 the mass of a single atom of the most abundant carbon isotope 12C—called also dalton
March 29, 2015
discomfit Hear it
To thwart or disconcert
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