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dose

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noun [countable] dose pronunciation in American English /doʊs/ 
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singulardose
pluraldoses
  1. 1
    medical an amount of a drug that has been measured so that you can take it
    dose of:

    If you are in pain, increase the dose of painkillers.

    a small/low dose:

    Taking a low dose of aspirin can help prevent heart attacks.

    a fatal/lethal dose (=an amount that will kill you):

    a lethal dose of morphine

    See also  medicine
  2. 2
    an amount of a particular quality
    dose of:

    Marcus added a healthy dose of skepticism to the discussion.

    1. a.
      an amount of something bad that happens to you

      Local people were exposed to high doses of radiation.

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