DEMENTIA


Meaning of DEMENTIA in English

/ dɪˈmenʃə; NAmE / noun

[ U ] ( medical ) a serious mental disorder caused by brain disease or injury, that affects the ability to think, remember and behave normally

—see also senile dementia

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WORD ORIGIN

late 18th cent.: from Latin , from demens , dement- out of one's mind.

Oxford Advanced Learner's English Dictionary.      Оксфордский английский словарь для изучающик язык на продвинутом уровне.