(chemistry) the mass of an atom of a chemical element expressed in atomic mass units
(weapons) deriving destructive energy from the release of atomic energy
the property of a body that causes it to have weight in a gravitational field
(often followed by `of') a large number or amount or extent
an ill-structured collection of similar things (objects or people)
(Roman Catholic Church and Protestant Churches) the celebration of the Eucharist
the common people generally
join together into a mass or collect or form a mass
the property of something that is great in magnitude
