de ‧ men ‧ tia /dɪˈmenʃə, -ʃiə $ -tʃə/ BrE AmE noun [uncountable]
[ Date: 1700-1800 ; Language: Latin ; Origin: mens 'mind' ]
an illness that affects the brain and memory, and makes you gradually lose the ability to think and behave normally
de ‧ men ‧ tia /dɪˈmenʃə, -ʃiə $ -tʃə/ BrE AmE noun [uncountable]
[ Date: 1700-1800 ; Language: Latin ; Origin: mens 'mind' ]
an illness that affects the brain and memory, and makes you gradually lose the ability to think and behave normally
Longman Dictionary of Contemporary English. Longman - Словарь современного английского языка. 2012