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Pronunciation: di-la'shun


  1. Physiologic or artificial enlargement of a hollow structure or opening.
  2. The act of stretching or enlarging an opening or the lumen of a hollow structure.

Synonym(s): dilatation

[L. dilato, pp. dilatatus, to spread out, dilate]

Further information

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© Copyright 2018 Wolters Kluwer. All Rights Reserved. Review date: Sep 19, 2016.