dilation

Noun
  1. A lengthy discussion (spoken or written) on a particular topic (synset 107152658)
    is a type of: discourse, discussion, treatment - an extended communication (often interactive) dealing with some particular topic
  2. The act of expanding an aperture (synset 100366821)
    "the dilation of the pupil of the eye"
    is a type of: enlargement, expansion - the act of increasing (something) in size or volume or quantity or scope
    subtypes:
    • vasodilation - dilation of blood vessels (especially the arteries)
    • mydriasis - reflex pupillary dilation as a muscle pulls the iris outward; occurs in response to a decrease in light or certain drugs
    same as: dilatation

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