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concentration - definition and synonyms


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noun concentration pronunciation in British English /ˌkɒns(ə)nˈtreɪʃ(ə)n/
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  1. 1
    [uncountable] the process of giving all your attention to something
    It took all his concentration to stay awake.
    lose concentration: She lost concentration for a moment and slipped.
    a lapse of concentration (=a short period when you do not concentrate): He had a little lapse of concentration and lost the game.
  2. 2
    [countable/uncountable] a large number of people or things in one area or a large amount of a particular thing
    large concentrations of Christians in this part of the city
  3. 3
    [countable/uncountable] science the amount of a substance that is present in something
    An investigation found high concentrations of cancer-causing chemicals on the property.


a course of study which is much shorter than a university course and focuses on the skills you need for a job, especially computer-related skills

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an ancient Roman system of underfloor heating, used to heat houses with hot air; from the Latin 'hypocaustum'

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