• synonyms


  1. the condition of having an unusually vivid or precise memory.
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Origin of hypermnesia

First recorded in 1880–90; hyper- + (a)mnesia
Related formshy·perm·ne·sic [‐nee-sik, ‐zik] /‐ˈni sɪk, ‐zɪk/, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for hypermnesia

Historical Examples

  • If the personal memory be over-excited, exalt, we have hypermnesia.

    Metapsychical Phenomena

    J. Maxwell

  • The hypermnesia of the dream and the resort to infantile material have become main supports in our theory.

    Dream Psychology

    Sigmund Freud

British Dictionary definitions for hypermnesia


  1. psychol an unusually good ability to remember, found in some mental disorders and possibly in hypnosis
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Word Origin

C20: New Latin, from hyper- + -mnesia, formed on the model of amnesia
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

hypermnesia in Medicine


  1. Exceptionally exact or vivid memory, especially as associated with certain mental illnesses.
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.