a body of coherent matter, usually of indefinite shape and often of considerable size:
a mass of dough.
a collection of incoherent particles, parts, or objects regarded as forming one body:
a mass of sand.
Synonyms: assemblage, heap, congeries.
aggregate; whole (usually preceded by in the):
People, in the mass, mean well.
a considerable assemblage, number, or quantity:
a mass of errors; a mass of troops.
Synonyms: collection, accumulation, pile, conglomeration.
bulk, size, expanse, or massiveness:
towers of great mass and strength.
Synonyms: magnitude, dimension.
the main body, bulk, or greater part of anything:
the great mass of American films.
Physics. the quantity of matter as determined from its weight or from Newton’s second law of motion.
Compare (def 2), , .
Pharmacology. a preparation of thick, pasty consistency, from which pills are made.
the masses, the ordinary or common people as a whole; the working classes or the lower social classes.
Synonyms: proletariat, plebeians.
pertaining to, involving, or affecting a large number of people:
mass unemployment; mass migrations; mass murder.
participated in or performed by a large number of people, especially together in a group:
mass demonstrations; mass suicide.
pertaining to, involving, or characteristic of the mass of the people:
the mass mind; a movie designed to appeal to a mass audience.
reaching or designed to reach a large number of people:
television, newspapers, and other means of mass communication.
done on a large scale or in large quantities:
verb (used without object)
to come together in or form a mass or masses:
The clouds are massing in the west.
verb (used with object)
to gather into or dispose in a mass or masses; assemble:
The houses are massed in blocks.
Synonyms: collect, marshal, amass, aggregate.
a large coherent body of matter without a definite shape
a collection of the component parts of something
a large amount or number, such as a great body of people
the main part or majority: the mass of the people voted against the government’s policy
in the mass, in the main; collectively
the size of a body; bulk
(physics) a physical quantity expressing the amount of matter in a body. It is a measure of a body’s resistance to changes in velocity (inertial mass) and also of the force experienced in a gravitational field (gravitational mass): according to the theory of relativity, inertial and gravitational masses are equal See also inertial mass, gravitational mass
(in painting, drawing, etc) an area of unified colour, shade, or intensity, usually denoting a solid form or plane
(pharmacol) a pastelike composition of drugs from which pills are made
(mining) an irregular deposit of ore not occurring in veins
done or occurring on a large scale: mass hysteria, mass radiography
consisting of a mass or large number, esp of people: a mass meeting
to form (people or things) or (of people or things) to join together into a mass: the crowd massed outside the embassy
(in the Roman Catholic Church and certain Protestant Churches) the celebration of the Eucharist See also High Mass, Low Mass
a musical setting of those parts of the Eucharistic service sung by choir or congregation
“lump, quantity, size,” late 14c., from Old French masse “lump, heap, pile; crowd, large amount; ingot, bar” (11c.), and directly from Latin massa “kneaded dough, lump, that which adheres together like dough,” probably from Greek maza “barley cake, lump, mass, ball,” related to massein “to knead,” from PIE root *mag- “to knead” (cf. Lithuanian minkyti “to knead,” see macerate). Sense extended in English 1580s to “a large quantity, amount, or number.” Strict sense in physics is from 1704.
As an adjective from 1733, first attested in mass meeting in American English. mass culture is from 1916 in sociology (earlier in biology); mass hysteria is from 1914; mass media is from 1923; mass movement is from 1897; mass production is from 1920; mass grave is from 1918; mass murder from 1880.
“Eucharistic service,” Old English mæsse, from Vulgar Latin *messa “eucharistic service,” literally “dismissal,” from Late Latin missa “dismissal,” fem. past participle of mittere “to let go, send” (see mission); probably so called from the concluding words of the service, Ite, missa est, “Go, (the prayer) has been sent,” or “Go, it is the dismissal.”
“to gather in a mass” (intransitive), 1560s, from mass (n.1) or from French masser. Transitive sense by c.1600. Related: Massed; massing.
A measure of the amount of matter contained in or constituting a physical body. In classical mechanics, the mass of an object is related to the force required to accelerate it and hence is related to its inertia, and is essential to Newton’s laws of motion. Objects that have mass interact with each other through the force of gravity. In Special Relativity, the observed mass of an object is dependent on its velocity with respect to the observer, with higher velocity entailing higher observed mass. Mass is measured in many different units; in most scientific applications, the SI unit of kilogram is used. See Note at weight. See also rest energy, General Relativity.
The common name in the Roman Catholic Church, and among some members of the Anglican Communion, for the sacrament of Communion.
Note: In the Middle Ages in England, mass meant a religious feast day in honor of a specific person; thus, “Christ’s Mass,” or Christmas, is the feast day of Christ; and Michaelmas is the feast day of the angel Michael.
In music, a musical setting for the texts used in the Christian Church at the celebration of the Mass, or sacrament of Communion. Most Masses have been written for use in the Roman Catholic Church.
Note: Many composers have written Masses; among them are Johann Sebastian Bach, Franz Josef Haydn, Wolfgang Amadeus Mozart, Franz Schubert, Leonard Bernstein, and Duke Ellington.
In physics, the property of matter that measures its resistance to acceleration. Roughly, the mass of an object is a measure of the number of atoms in it. The basic unit of measurement for mass is the kilogram. (See Newton’s laws of motion; compare weight.)
- Massed practice
noun 1. (psychol) learning with no intervals or short intervals between successive bouts of learning Compare distributed practice
noun 1. mass and energy considered as equivalent and interconvertible, according to the theory of relativity
- Mass-energy equivalence
mass-energy equivalence An equation derived from Einstein’s theory of Special Relativity expressing the relationship between the mass and energy of objects with mass. The equation is E = mc2, where E is the energy of the object in joules, m is its relativistic mass in kilograms, and c is the speed of light (approximately 3 […]
- Mass-energy equation
[mas-en-er-jee] /ˈmæsˈɛn ər dʒi/ noun, Physics. 1. the equation, E=mc2, formulated by Albert Einstein, expressing the equivalence between mass and energy, where E is energy, m is mass, and c is the velocity of light.