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

 

dementia

 noun
noun
BrE BrE//dɪˈmenʃə//
 
; NAmE NAmE//dɪˈmenʃə//
 
[uncountable](medical) Mental and emotional problems, Old age
 
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a serious mental disorder caused by brain disease or injury, that affects the ability to think, remember and behave normally see also senile dementia Wordfinderanorexia, autism, bipolar disorder, condition, dementia, depression, mentally, paranoia, psychosis, schizophrenia Wordfindercare home, dementia, frail, geriatric, mobility, the old, pensioner, retire, sprightly, widow See related entries: Mental and emotional problems, Old age Word Origin late 18th cent.: from Latin, from demens, dement- ‘out of one's mind’.
See the Oxford Advanced American Dictionary entry: dementia

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