senile dementia

noun

medical : a condition that affects the mind of aging people and causes them to be confused, to forget things, etc.

Full Definition of SENILE DEMENTIA

: dementia of old age especially of the degenerative type associated with Alzheimer's disease

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circa 1851

Medical Dictionary

noun

: a mental disorder of old age especially of the degenerative type associated with Alzheimer's disease—called also senile psychosis

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