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Pronunciation: tri'ad


  1. A collection of three things having something in common.
  2. The transverse tubule and the terminal cisternae on each side of it in skeletal muscle fibers.
  3. The father, mother, and child relationship projectively experienced in group psychotherapy.

Synonym(s): portal triad

[G. trias (triad-), the number 3, fr. treis, three]

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