n. (Roman Catholic Church and Protestant Churches) the celebration of the Eucharist

n. the property of a body that causes it to have weight in a gravitational field

n. a sequence of prayers constituting the Christian Eucharistic rite; "the priest said Mass"

n. the property of something that is great in magnitude; "it is cheaper to buy it in bulk"; "he received a mass of correspondence"; "the volume of exports"

n. a musical setting for a Mass; "they played a Mass composed by Beethoven"

n. the common people generally; "separate the warriors from the mass"; "power to the people"

n. a body of matter without definite shape; "a huge ice mass"

v. join together into a mass or collect or form a mass; "Crowds were massing outside the palace"

adj. "mass destruction"