from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A progressive, abnormally accelerated deterioration of mental faculties and emotional stability in old age, occurring especially in Alzheimer's disease.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. dementia of the aged; results from degeneration of the brain in the absence of cerebrovascular disease
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