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perseveration

[per-sev-uh-rey-shuh n] /pərˌsɛv əˈreɪ ʃən/
noun
1.
the act or process of perseverating.
2.
Psychiatry. the pathological, persistent repetition of a word, gesture, or act, often associated with brain damage or schizophrenia.
Origin
1605-1615
1605-15 in sense “perseverance”; persevere + -ation, or < Latin perseverātiōn-, stem of persevērātiō
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for perseveration

perseveration

/pɜːˌsɛvəˈreɪʃən/
noun (psychol)
1.
the tendency for an impression, idea, or feeling to dissipate only slowly and to recur during subsequent experiences
2.
an inability to change one's method of working when transferred from one task to another
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for perseveration
n.

early 15c., "duration, quality of persisting; will to persevere," from Old French perseveracion "persistence, stubbornness" (13c.) and directly, from Latin perseverationem (nominative perseveratio), noun of action from past participle stem of perseverare (see persevere). Psychological sense (1915) is from German.

Online Etymology Dictionary, © 2010 Douglas Harper
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perseveration in Medicine

perseveration per·sev·er·a·tion (pər-sěv'ə-rā'shən)
n.

  1. Uncontrollable repetition of a particular response, such as a word, phrase, or gesture, despite the absence or cessation of a stimulus, usually caused by brain injury or other organic disorder.

  2. The tendency to continue or repeat an act or activity after the cessation of the original stimulus.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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