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

aphasia

noun
 
/əˈfeɪziə/
 
/əˈfeɪʒə/
[uncountable] (medical)
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  1. the loss of the ability to understand or produce speech, because of brain damageTopics Disabilityc2
    Word Originmid 19th cent.: from Greek, from aphatos ‘speechless’, from a- ‘not’ + phanai ‘speak’.
See aphasia in the Oxford Advanced American Dictionary
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noun
 
 
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