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

(intransitive, obsolete) To celebrate mass.

(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. / Alternative form of Mas

Abbreviation of Massachusetts.

present participle of mass

A bringing together into a mass.

plural of massing

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

Having mass; massive