mass Definition in the Cambridge English Dictionary Cambridge dictionaries logo

Definition of “mass” - English Dictionary

"mass" in American English

See all translations

massnoun [C]

 us   /mæs/
  • mass noun [C] (LARGE AMOUNT)

a ​largeamount or ​number: A mass of ​earth and ​graniteslid down into the ​narrowgorge. We had to ​wade through masses of ​seaweed.
  • mass noun [C] (MATTER)

[C] physics the ​amount of ​matter in any ​solidobject or in any ​volume of ​liquid or ​gasmass number physics The mass ​number is the ​totalnumber of ​protons and ​neutrons in an ​atom.mass defect physics The mass ​defect is the ​difference between the mass of a ​nucleus (= ​centralpart of an ​atom) and the mass of the ​separatepieces that make up the ​nucleus.
  • mass noun [C] (ART)

art [U] the ​outsidesize or ​shape of an ​object, or how ​big it ​appears to be

massverb [I/T]

 us   /mæs/
  • mass verb [I/T] (CREATE LARGE AMOUNT)

to come or ​bring together in ​largenumbers: [I] The ​crowd massed around the ​entrance to the ​exhibition.

massadjective [not gradable]

 us   /mæs/
involving or having an ​effect on a ​largenumber of ​people or things: weapons of mass ​destruction They ​hope the new ​movie will ​appeal to a mass ​audience.

Massnoun [C/U]

 us   /mæs/
(esp. in the ​RomanCatholicChurch) a ​religiousceremonybased on Jesus’s last ​meal with his ​disciples (= the men who ​followed him), or ​music written for the ​parts of this ​ceremony
(Definition of mass from the Cambridge Academic Content Dictionary © Cambridge University Press)







"mass" in British English

See all translations

massadjective [before noun]

uk   us   /mæs/
C1 having an ​effect on or ​involving a ​largenumber of ​people or ​forming a ​largeamount: weapons of mass destruction a mass murderer mass starvation Opposition ​groupsplan to ​stage mass demonstrations all over the ​country.

expend iconexpend iconMore examples

massnoun

uk   us   /mæs/
  • mass noun (LARGE AMOUNT)

B2 [S] a ​largeamount of something that has no ​particularshape or ​arrangement: The ​explosionreduced the ​church to a mass ofrubble. The ​forest is a mass ofcolour in ​autumn.masses [plural] UK informal B2 a lot: [+ to infinitive] I've got masses to do at the ​weekend. There were masses ofpeople in ​town today.the mass of sth most of something: The mass of the ​peoplesupport the ​reforms.

expend iconexpend iconMore examples

  • mass noun (PHYSICS)

[C] specialized physics the ​amount of ​matter in any ​solidobject or in any ​volume of ​liquid or ​gas: The ​acceleration of a ​bodyequals the ​forceexerted on it ​divided by ​its mass.mass number the ​totalnumber of protons and neutrons in an ​atommass defect the ​difference between the mass of a nucleus (= ​centralpart of an ​atom) and the mass of the ​separatepieces that make up the nucleus

massverb [I]

uk   us   /mæs/
(Definition of mass from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)

"mass" in Business English

See all translations

massadjective [before noun]

uk   us   /mæs/
having an ​effect on or involving a large ​number of ​people: There have been two decades of mass ​unemployment. mass audience/appeal A ​smallercompany could ​produce a ​breakthroughproduct with mass ​appeal.mass consumerism/consumption The ​society that we ​live in now is so geared to ​spending and mass ​consumerism. a mass ​protest/​rally/​action
See also

massnoun

uk   us   /mæs/
[U] the ​amount of matter in any ​solidobject or ​volume of ​liquid or ​gas: These ​activitieshelpstrengthen bones and ​increase their mass.
a mass of sth [S] a large ​amount of something: The ​mediacompany has enjoyed a mass of ​hype. They were ​part of the large mass of ​consumers who ​acquired a ​creditcard in the 1980s.
(Definition of mass from the Cambridge Business English Dictionary © Cambridge University Press)
What is the pronunciation of mass?
Add Cambridge dictionaries to your browser to your website

“mass” in Business English

Word of the Day

procession

a line of people who are all walking or travelling in the same direction, especially in a formal way as part of a religious ceremony or public celebration

Word of the Day

I used to work hard/I’m used to working hard (Phrases with ‘used to’)
I used to work hard/I’m used to working hard (Phrases with ‘used to’)
by Kate Woodford,
February 10, 2016
On this blog, we like to look at words and phrases in the English language that learners often have difficulty with. Two phrases that can be confused are ‘used to do something’ and ‘be used to something/doing something’. People often use one phrase when they mean the other, or they use the wrong

Read More 

farecasting noun
farecasting noun
February 08, 2016
predicting the optimum date to buy a plane ticket, especially on a website or using an app A handful of new and updated websites and apps are trying to perfect the art of what’s known as farecasting – predicting the best date to buy a ticket.

Read More