- Main Entry:
- de·men·tia

- Pronunciation:
-
\di-ˈmen-chə\
- Function:
- noun
: a usually progressive condition (as Alzheimer's disease) marked by the development of multiple cognitive deficits (as memory impairment, aphasia, and inability to plan and initiate complex behavior)
—
de·men·tial \-chəl\
adjective