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Từ điển Oxford Learners Wordfinder Dictionary
Alzheimer's disease
a progressive form of presenile dementia that is similar to senile dementia except that it usually starts in the 40s or 50s; first symptoms are impaired memory which is followed by impaired thought and speech and finally complete helplessness • Syn: Alzheimer's, Alzheimers • Hypernyms: presenile dementia
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