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Từ điển WordNet v3.1 - WordNet 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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