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Longman Dictionary of Contemporary English
senile dementia
noun
EXAMPLES FROM CORPUS
▪ Alzheimer's Disease was now widely known and recognised as an incurable form of senile dementia.
▪ I've heard there's a link between this condition and senile dementia.
▪ In this sense the world would be a better place without mental retardation, madness, and senile dementia.
▪ Maybe he was suffering from premature senile dementia?
▪ Most studies have investigated senile dementia in relatively small populations.
▪ Mr Allsopp was known to suffer from senile dementia and was often seen walking in the area.
▪ The main gap was in provision for elderly people with senile dementia and for the new long-stay population.
WordNet
senile dementia

n. dementia of the aged; results from degeneration of the brain in the absence of cerebrovascular disease [syn: senile psychosis]

Usage examples of "senile dementia".

Unless you've been living in a country too poor to furnish the supplies, the odds are that two of every five of your acquaintances are dicties - perhaps on some socially acceptable drug like alcohol, but quite likely on a trank that by way of side-effect depresses orgasmic capacity and compels the user to resort to orgies in order to stimulate flagging potency, or on a product like Skulbustium which offers the tempting bait of a totally, untrespassably private experience and entrains senile dementia rather more certainly than tobacco entrains cancer of the lung.

The professionals judged that Brendan was suffering from senile dementia, an irreversible process which would finally make him impossible for Cal to nurse.

The scene was too detailed to be a place in a dream or part of the hallucination-riddled world of senile dementia.

It depends on what his brain, and our examination has already disclosed that he suffers from senile dementia, still contains by way of memory.

Which replicate into age-deteriorated tissues, so that after some yearsit depends on the amount of deterioration in the original as well as the exact kind of faulty drugthe deterioration affects brain function like any other senile dementia.

Mom told me that was senile dementia, and you can't catch it, and you can't get it unless you're real old, like forty at least.

Nurse, if she didn't have more money than any person ought to have, you might be tempted to call it senile dementia.