Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “concentration”

concentration

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

concentration noun (ATTENTION)

B2 [U] the ability to think carefully about something you are doing and nothing else: The noise outside made concentration difficult. There was a look of intense concentration on her face. I find that yoga improves my powers of concentration. I found it hard to follow what the teacher was saying, and eventually I lost concentration. The government's concentration on tax reduction has won them a lot of support.

concentration noun (AMOUNT)

C2 [C or U] a large number or amount of something in the same place: There is a heavy concentration of troops in the area. [C or U] specialized chemistry the exact amount of one particular substance that is found in another substance: a concentration of one part per million High concentrations of toxic elements were found in the polluted areas.
(Definition of concentration from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
What is the pronunciation of concentration?
Browse related topics

You are looking at an entry to do with Paying attention and being careful, but you might be interested in these topics from the Attention and care topic area:

Add Cambridge dictionaries to your browser to your website

More meanings of “concentration”

Definitions of “concentration” in other dictionaries

Word of the Day

yo

used as an informal greeting between people who know each other or as an expression of approval

Word of the Day

Come on – you can do it! Phrasal verbs with ‘come’.

by Liz Walter​,
November 19, 2014
As part of an occasional series on the tricky subject of phrasal verbs, this blog looks at ones formed with the verb ‘come’. If you are reading this blog, I’m sure you already know come from, as it is one of the first things you learn in class: I come from Scotland/Spain.

Read More 

silver splicer noun

November 17, 2014
informal a person who marries in later life Newly retired and now newlywed – rise of the ‘silver splicers’ Reaching pension age becomes a trigger to tie the knot as baby-boomers begin to redefine retirement

Read More