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Pronunciation: block


  1. To obstruct; to arrest passage through.
  2. A condition in which the passage of an electric impulse is arrested, wholly or in part, temporarily or permanently.
  3. A portion of a polymer structure consisting of constitutional units not present in adjacent regions of that same polymer.

Synonym(s): atrioventricular block

[Fr. bloquer]

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© Copyright 2017 Wolters Kluwer. All Rights Reserved. Review Date: Sep 19, 2016.