A progressive, abnormally accelerated deterioration of mental faculties and emotional stability in old age, occurring especially in Alzheimer's disease.(noun)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "senile dementia" in a sentence
"With the naked eye one can see in paresis, in senile dementia etc., the great diminution and disappearance of the cerebral cortex, adhesions between the cortex and the brain coverings, oedema of the ventricles, scars, shrinkages, softenings, changes in the blood-vessels, etc."