1rare Generally. An inability or refusal to acknowledge or accept evidence; lack of understanding.
historical The inability to recognize objects by sight, caused by lesions of certain parts of the cerebral cortex; visual agnosia. Also called psychic blindness.
An inability to recognize, understand, or interpret mental states (thoughts, beliefs, intentions, etc.) in oneself or others, attributed to persons with autism and related disorders.
Mid 17th century; earliest use found in Samuel Rutherford (c1600–1661), Church of Scotland minister and political theorist. From mind + blindness.