Look up mass in Wiktionary, the free dictionary.

Mass may refer to:

[edit] In science

• Mass, the amount of matter in an object to which its weight is proportional
  • Invariant mass, mass defined in such a way as to be invariant in all reference frames
• Effective mass (solid-state physics), the mass a particle seems to carry in the semiclassical model of transport in a crystal
• Thermal mass, a mass which absorbs heat
• Mass (mass spectrometry), a chemical analysis technique
• Mass (medicine), a tumor
• Mass wasting, the geomorphic process by which soil and rock move downslope under gravity
• True mass, the mass of a planet, used to differentiate from a lower limit on mass
• Landmass, a continuous area of land or land mass, the measure of an area of land
• Body mass index, a health indicator related to human body weight and height

[edit] As a term referring to the general public

Singular and plural forms (masses) may refer to:

• The general public or the common people
• The working class or the people
• Hoi polloi (literally Greek for "the many"), a term that usually refers to common people (as opposed to oligarchy)
• Mass communication
• Mass consumption
• Mass education
• Mass marketing
• Mass media
• Mass psychology
• Mass transit
• The Masses, a Socialist magazine

[edit] In organisation

• Manab Adhikar Sangram Samiti, a non profit human rights regional NGO in Assam

[edit] In religion

• Mass (liturgy), religious service in some Christian churches
• Mass (music), a choral composition that sets liturgical text to music
• Black Mass, a parody of the Christian mass often associated with Satanism

[edit] In music and entertainment

• Mass (Stravinsky), Roman Catholic Mass composed by Igor Stravinsky
• Mass (Bernstein), a music theater piece by Leonard Bernstein
• Mass (film), a Tollywood film starring Akkineni Nagarjuna
• Mass (theatre), a 1971 musical setting of the Roman Catholic Mass by Leonard Bernstein
• Mass (English band), a post-punk band who recorded for the 4AD label
• Mass, an alias of electronic musician Peter Harris (Blu Peter)

[edit] In military

• M26 Modular Accessory Shotgun System (MASS), the developmental under barrel shotgun for the M16 rifle/M4 carbine family of guns
• Marine Air Support Squadron (MASS), United States Marine Corps aviation support unit
• MASS (decoy system)

[edit] Other uses

• Marc and Eva Stern Math and Science School, The Marc and Eva Stern Math and Science School or just (Stern MASS)

• Mass., an abbreviation for the U.S. state of Massachusetts
• Isaac Mass, a Franklin County, Massachusetts politician
• Maß, a unit of volume in German, pronounced 'mass'
• Muscle mass, a bodybuilding term concerning the configuration of muscles in a person's body

[edit] As an adjective meaning many

Mass may be used to modify nouns to apply to many cases or instances:

• Mass burial
• Mass hallucination
• Mass hypnosis
• Mass hysteria
• Mass murder
• Mass production
• Mass storage
• Mass suicide
• Weapons of mass destruction

[edit] See also

• Matter
• Weight

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