Mass (disambiguation) - Definition

In physics, mass is a property of physical objects which, roughly speaking, measure the amount of matter contained in an object.
In more general terms, mass often has more to do with volume or bulkiness, or with how much of the field of view an object occupies. This is the sense in which the related adjective massive is often used in non-technical contexts.
The USA state, Massachusetts.
In religion, the mass (liturgy), is the principal worship service of Christian churches.
In classical music, a mass is a choral composition that sets the fixed portions of the Eucharistic liturgy (principally that of the Roman Catholic Church) to music.
In medicine, a mass is a tumor.
In bodybuilding, the term muscle mass deals with the shape and definition of muscles
The term the masses (also known as hoi polloi) refers to the a collection of common people, especially the working class
As an adject, it often refers generally to large numbers or quantities of something, as in mass murder and weapons of mass destruction.

See also