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Pronunciation: (sē'nīl, -nil, sen'īl), [key]
1. showing a decline or deterioration of physical strength or mental functioning, esp. short-term memory and alertness, as a result of old age or disease.
2. of or belonging to old age or aged persons; gerontological; geriatric.
3. Physical Geog.(of topographical features) having been reduced by erosion to a featureless plain that stands everywhere at base level. Cf. peneplain.

a senile person.

Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.

senhoritasenile dementia
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