from The Century Dictionary.

  • noun A defect in tactile sensation, which causes inability to estimate the form or substance of a body by touch.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun The inability to identify an object by touch without visual input; a form of tactile agnosia.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • noun a loss of the ability to recognize objects by handling them


from Wiktionary, Creative Commons Attribution/Share-Alike License

a- +‎ stereognosis


  • If the patient experiences difficulty and if his naming ability as previously tested is intact, he is manifesting astereognosis, which could be due to dysfunction of the contralateral in this case, the nondominant parietal lobe or of interhemispheric connections, such as the corpus callosum.

    The Neuropsychiatric Guide to Modern Everyday Psychiatry

  • Irritative lesions of the sensory mechanism cause numbness and tingling (paræsthesia); more extensive paralytic lesions produce anæsthesia, astereognosis, loss of muscle sense, loss of pain, or inability to distinguish temperature, according to the tracts that are affected.

    Manual of Surgery Volume Second: Extremities—Head—Neck. Sixth Edition.


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  • Definition here.

    December 8, 2007

  • Fascinating, SoG. Thanks for the link.

    December 8, 2007