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agnosia

[ag-noh-zhuh, -zhee-uh, -zee-uh]
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noun Psychiatry, Psychology, Neurology.
  1. partial or total inability to recognize objects by use of the senses.
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Origin of agnosia

1895–1900; < Greek agnōsía ignorance, equivalent to ágnōt(os) unknown (see agnostic) + -ia -y3
Formerly agnostic aphasia.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for agnosia

agnosia

noun
  1. psychol loss or diminution of the power to recognize familiar objects or people, usually as a result of brain damage
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Derived Formsagnosic, adjective

Word Origin

C20: New Latin, from Greek agnōsia, from a- without + gnōsis knowledge
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

agnosia in Medicine

agnosia

(ăg-nōzhə)
n.
  1. Loss of the ability to interpret sensory stimuli, such as sounds or images.
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.