Definition of aphasia noun from the Oxford Advanced Learner's Dictionary



BrE BrE//əˈfeɪziə//
; NAmE NAmE//əˈfeɪziə//
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the loss of the ability to understand or produce speech, because of brain damage Word Origin mid 19th cent.: from Greek, from aphatos ‘speechless’, from a- ‘not’ + phanai ‘speak’.
See the Oxford Advanced American Dictionary entry: aphasia