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Pronunciation: patch


  1. A small circumscribed area differing in color or structure from the surrounding surface.
  2. In dermatology, a flat area larger than 1 cm in diameter.
  3. An intermediate stage in the formation of a cap on the surface of a cell.

Further information

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