concentration Meaning in the Cambridge English Dictionary
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Meaning of “concentration” in the English Dictionary

"concentration" in British English

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concentrationnoun

uk   /ˌkɒn.sənˈtreɪ.ʃən/  us   /ˌkɑːn-/

concentration noun (ATTENTION)

B2 [U] the ​ability to ​thinkcarefully about something you are doing and nothing ​else: The ​noiseoutside made concentration ​difficult. There was a ​look of intense concentration on her ​face. I ​find that ​yogaimproves my powers of concentration. It was hard to ​follow what the ​teacher was saying, and ​eventually I lost concentration. The party's concentration ontaxreduction has ​won them a lot of ​support.
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concentration noun (AMOUNT)

C2 [C or U] a ​largenumber or ​amount of something in the same ​place: There is a ​heavy concentration oftroops in the ​area. [C or U] specialized chemistry the ​exactamount of one ​particularsubstance that is ​found in another ​substance: a concentration of one ​partper million High concentrations oftoxicelements were ​found in the ​pollutedareas.
(Definition of concentration from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)

"concentration" in American English

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concentrationnoun

 us   /ˌkɑn·sənˈtreɪ·ʃən/

concentration noun (COMING TOGETHER)

a ​largeamount of something in the same ​place: [C] There’s a ​heavy concentration of ​poor and ​elderly in the ​district.

concentration noun (GIVING ATTENTION)

[U] a lot of ​attention and ​thoughtdirected to an ​activity or ​subject: He had a ​look of ​intense concentration on his ​face.

concentration noun (SUBSTANCE)

the ​amount of a ​substance that is ​mixed with ​water or another ​substance
(Definition of concentration from the Cambridge Academic Content Dictionary © Cambridge University Press)

"concentration" in Business English

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concentrationnoun

uk   us   /ˌkɒnsənˈtreɪʃən/
[C or U] the fact of there being a large ​number or ​amount of ​people or things of the same ​type in the same ​place: The state's ​highest concentration of ​wealth is in the metro ​areas. Denver has one of the biggest concentrations of ​techworkers in the country. By ​identifyinggeographical concentrations of ​industries, we can ​identifytrainingneeds that exist in those ​regions.
[U] the fact of things being ​combined into a ​singlegroup, or ​controlled by the same ​person or ​organization: This ​situation has resulted in the concentration of the ​industry in the ​hands of a few ​multinationalcompanies.
[U] the ​ability to give all of your ​attention to one particular ​activity, ​subject, or problem: Low ​costs and concentration oncorebusinessactivitiesform the ​basis of our ​success. Many of the mistakes she made in the ​job were ​due to a ​lack of concentration.
(Definition of concentration from the Cambridge Business English Dictionary © Cambridge University Press)
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