[di-men-shuh, -shee-uh] 
| severe impairment or loss of intellectual capacity and personality integration, due to the loss of or damage to neurons in the brain. |
| de·men·tia (dĭ-měn'shə) n.
[Latin dēmentia, madness, from dēmēns, dēment-, senseless; see dement.] de·men'tial adj. |
dementia de·men·tia (dĭ-měn'shə)
n.
Deterioration of intellectual faculties, such as memory, concentration, and judgment, resulting from an organic disease or a disorder of the brain, and often accompanied by emotional disturbance and personality changes.