plural of tyranny of the masses

Synonym of tyranny of the majority

plural of active gravitational mass

plural of average atomic mass

plural of inner cell mass

plural of passive gravitational mass

A noun that normally cannot be counted.

The mass of an atom. / (proscribed) atomic weight; the average mass of atoms of an element.

(physics, chemistry) The total number of protons and neutrons in an atomic nucleus. Symbol: A

The starvation of a large proportion of a region's population due to drought, warfare, famine or similar events.