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Medical Term:


Pronunciation: per-sev'er-a'shun


  1. The constant repetition of a meaningless word or phrase.
  2. The duration of a mental impression, measured by the rapidity with which one impression follows another as determined by the revolving of a two-colored disc.
  3. In clinical psychology, the uncontrollable repetition of a previously appropriate or correct response, even though the repeated response has since become inappropriate or incorrect.

[L. persevero, to persist]

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