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Loss of the ability to interpret sensory stimuli, such as sounds or images.

[Greek agnōsiā, ignorance : a-, without; see a-1 + gnōsis, knowledge (from gignōskein, to know; see gnō- in Indo-European roots).]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


(Psychology) psychol loss or diminution of the power to recognize familiar objects or people, usually as a result of brain damage
[C20: New Latin, from Greek agnōsia, from a- without + gnōsis knowledge]
agˈnosic adj
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(ægˈnoʊ ʒə, -ʒi ə, -zi ə)

n. Psychiatry.
partial or total inability to recognize objects by use of the senses.
[1895–1900; < Greek agnōsía ignorance =ágnōt(os) unknown (see agnostic) + -ia -y3]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.agnosia - inability to recognize objects by use of the sensesagnosia - inability to recognize objects by use of the senses
astereognosis, tactile agnosia - a loss of the ability to recognize objects by handling them
brain disease, brain disorder, encephalopathy - any disorder or disease of the brain
auditory agnosia - inability to recognize or understand the meaning of spoken words
visual agnosia - inability to recognize or interpret objects in the visual field
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.


n. agnosia, desorden o incapacidad debido a una lesión cerebral por la cual una persona pierde total o parcialmente el uso de los sentidos y no reconoce a personas u objetos familiares;
visual ______visual.
English-Spanish Medical Dictionary © Farlex 2012
References in periodicals archive ?
The title refers to one of Sacks's patients who had visual agnosia - a neurological condition that left him unable to recognise even familiar faces and objects.
"Agnosia affects your ability to recognize and/or identify people and objects--for example you may not recognize that an object is a cup, or you may recognize it but not be able to identify its purpose," Dr.
A significant reduction in visual-perceptual and visual-constructive abilities and different modalities of visual gnosis (visual agnosia for colors, objects and numbers) were recorded.
Kluver-Bucy syndrome (KBS) is characterized by psychic blindness or visual agnosia, hypersexuality, emotional behavioral changes, especially placidity (decreased motor and verbal reaction against conditions that cause fear and anger), hyperorality, and hypermetamorphosis (increased interest in every object that enters the visual field) (1,2).
The most frequent sequelae after HSVE are memory impairment, language disorders (aphasia, agnosia, etc.).
General memory functioning was preserved and there was no evidence of a general object agnosia as shown by perfect scores on the Word Picture Match and Pyramids and Palm Trees tests.
The term 'agnosia' literally means 'without knowledge.' Visual agnosia describes the situation in which patients are unable to recognise stimuli visually; however, they may be able to use other senses or logical reasoning to aid identification.
(Lindley, 1853) 3 NOTODONTIDAE sp.3 2 Dioptinae Notascea brevispula (Miller, 2008) 20 Polupoetes rufipuncta (Schaus, 1894) 9 NYMPHALIDAE Biblidinae Myscelia orsis (Femea) (Drury, 1782) 1 Hamadryas feronia (Linnaeus, 1758) 3 Danainae Aeria olena olena (Weymer, 1875) 14 Episcada carcinia (Schaus, 1902) 8 Danaus gilippus (Cramer, 1775) 2 Danaus plexippus (Linnaeus, 1758) 2 Episcada hymenaea hymenaea (Prittwitz, 1865) 9 Hypoleria lavinia (Hewitson, [1855]) 11 Hypothyris euclea (Godart, 1819) 11 Hypothyris ninonia daeta (Boisduval, 1836) 19 Ithomia agnosia zikani (R.F.