Definition of stereognosis in English:



  • [mass noun] The mental perception of depth or three-dimensionality by the senses, usually in reference to the ability to perceive the form of solid objects by touch.

    • ‘Significant defects in graphesthesia and stereognosis occur with contralateral hemispheric disease, particularly in the parietal lobe (since this is the somatosensory association area that interprets sensation).’
    • ‘Subtle signs of frontal lobe dysfunction may be demonstrated by testing stereognosis (such as the ability to identify an object placed in the patient's palm).’
    • ‘This may indicate the possibility that oral stereognosis could enhance both the primary sensorimotor area and also other cerebral cortex regions associated with higher functions.’
    • ‘Note that graphesthesia, stereognosis, and extinction cannot reliably be tested for unless primary sensation is intact bilaterally.’


Early 20th century: from Greek stereos solid + gnōsis knowledge.