Definition of mass

• n. - The sacrifice in the sacrament of the Eucharist, or the consecration and oblation of the host.
• n. - The portions of the Mass usually set to music, considered as a musical composition; -- namely, the Kyrie, the Gloria, the Credo, the Sanctus, and the Agnus Dei, besides sometimes an Offertory and the Benedictus.
• v. i. - To celebrate Mass.
• n. - 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; as, a mass of ore, metal, sand, or water.
• n. - A medicinal substance made into a cohesive, homogeneous lump, of consistency suitable for making pills; as, blue mass.
• n. - A large quantity; a sum.
• n. - Bulk; magnitude; body; size.
• n. - The principal part; the main body.
• n. - The quantity of matter which a body contains, irrespective of its bulk or volume.
• v. t. - To form or collect into a mass; to form into a collective body; to bring together into masses; to assemble.