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are dilating

  • present progressive
    of dilate.
    dilate
    verb (used with object)
    to make wider or larger; cause to expand.

Example Sentences

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There are shots in the movie — I don't really watch myself that often, but I watched this — where my pupils are dilating.

From Salon Apr. 30, 2023

It must be remembered that the lungs are dilating each time a breath is taken in, and contracting each time a breath of air is expelled.

From Special Report on Diseases of the Horse by Charles B. Michener