plural of active gravitational mass

plural of average atomic mass

plural of inner cell mass

plural of passive gravitational mass

(astronomy) A fully-convective red dwarf or M dwarf star

(physics, chemistry) Synonym of conservation of mass

plural of mass extinction event

(evolutionary theory, geology) One of five historical events in which the Earth experienced a loss of ∼75% of all species over a geological interval of less than 3 million years, the most recent being the Cretaceous–Paleogene extinction event 66 million years ago.

Large facilities enabled to vaccinate.

plural of mass haul diagram