(Roman Catholic Church) The principal liturgical service of the Church, including a scripture service and a eucharistic service, which includes the consecration and oblation (offering) of the host and wine.

Abbreviation of Massachusetts.

(transitive) To form or collect into a mass; to form into a collective body; to bring together into masses; to assemble. / (intransitive) To have a certain mass.

(Christianity) The Eucharist, now especially in Roman Catholicism. / (Christianity) Celebration of the Eucharist. / (Christianity, usually as the Mass) The sacrament of the Eucharist.

Involving a mass of things; concerning a large quantity or number. / Involving a mass of people; of, for, or by the masses.

(intransitive, obsolete) To celebrate mass.

A quantity of matter cohering together so as to make one body, or an aggregation of particles or things which collectively make one body or quantity, usually of considerable size.

Obsolete form of mass.

The quality of being a part of a mass. / (linguistics, of a noun) The quality of being a mass noun.

Having mass; massive