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

 

aphasia

 noun
noun
BrE BrE//əˈfeɪziə//
 
; NAmE NAmE//əˈfeɪziə//
 
[uncountable](medical)
 
jump to other results
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