Definition of Alzheimer's disease noun from the Oxford Advanced American Dictionary

 

Alzheimer's disease

 noun
noun
NAmE//ˈɑltshaɪmərz dɪˌziz//
 
, NAmE//ˈælts‑//
 
, NAmE//ˈɔlts‑//
 
(also Alzheimer's)[uncountable]
 
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a serious disease, especially affecting older people, that prevents the brain from functioning normally and causes loss of memory, loss of ability to speak clearly, etc. synonym senile dementia
See the Oxford Advanced Learner's Dictionary entry: Alzheimer's disease