Definition of dementia
1 : a usually progressive condition (such as Alzheimer's disease) marked by the development of multiple cognitive deficits (such as memory impairment, aphasia, and the inability to plan and initiate complex behavior) < … dementia is diagnosed only when both memory and another cognitive function are each affected severely enough to interfere with a person's ability to carry out routine daily activities. — The Journal of the American Medical Association>
dementialplay \-shəl\ adjective
Examples of dementia in a sentence
This patient suffers from dementia.
a new study on age-related dementias
Origin and Etymology of dementia
Latin, from dement-, demens mad, from de- + ment-, mens mind — more at mind
First Known Use: 1806
Medical Definition of dementia
: 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)
Seen and Heard
What made you want to look up dementia? Please tell us where you read or heard it (including the quote, if possible).