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strain

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noun American English pronunciation: strain /streɪn/ 
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singularstrain
pluralstrains
 
  1. 1
    [countable/uncountable] pressure caused by a difficult situation
    a strain on something:

    This war will put a great strain on the economy.

    the strain of something:

    I can't take the strain of another move.

    1. a.
      physical effort or pressure
      under strain:

      All that lifting is putting his back under severe strain.

    2. b.
      mental pressure or worry
      under strain:

      Eleanor was feeling overworked and under strain.

  2. 3
    [countable] a particular type of animal, insect, or plant
    strain of:

    a strain of human flu virus

  3. 4
    [countable] a particular aspect of someone's character or feelings
    strain of:

    There's a strain of meanness that runs in their family.

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