Definition of Senility

1. Noun. Mental infirmity as a consequence of old age; sometimes shown by foolish infatuations.

Exact synonyms: Dotage, Second Childhood
Generic synonyms: Age, Eld, Geezerhood, Old Age, Years
Derivative terms: Senile

2. Noun. The state of being senile.
Generic synonyms: Oldness
Derivative terms: Senile

Definition of Senility

1. n. The quality or state of being senile; old age.

Definition of Senility

1. Noun. The losing of memory and reason due to old age. ¹

2. Noun. (countable archaic) An elderly, senile person. ¹

¹ Source:

Definition of Senility

1. mental and physical infirmity due to old age [n -TIES]

Medical Definition of Senility

1. Old age, the physical and mental deterioration associated with old age. This entry appears with permission from the Dictionary of Cell and Molecular Biology (11 Mar 2008)

Senility Pictures

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Lexicographical Neighbors of Senility

senile lenticular myopia
senile lentigo
senile memory
senile osteomalacia
senile plaque
senile plaques
senile psychosis
senile retinoschisis
senile sebaceous hyperplasia
senile tremor
senile wart
senility (current term)
senior captain
senior captains
senior chief petty officer
senior chief petty officers
senior citizen
senior citizens
senior colonel
senior colonels
senior high

Literary usage of Senility

Below you will find example usage of this term as found in modern and/or classical literature:

1. A Text-book of mental diseases by William Bevan Lewis (1890)
"Mental Derangements Incident to senility—Senile Mania—Senile ... Elimination of Urea in Chronic Cerebral Atrophy and Premature senility—A Local ..."

2. Preparing to Preach by David Riddle Breed (1911)
"X. MINISTERIAL senility. We come now to the question, How shall sermonic materials ... This is the subject of ministerial senility. It is commonly supposed, ..."

3. Nervous and Mental Disease Monograph Series (1907)
"Old age is an expression for the later periods of life and refers to a normal condition; senility is an expression for a pathologic condition not ..."

4. The Prolongation of Life: Optimistic Studies by Elie Metchnikoff (1908)
"... II THEORIES OF CAUSATION OF senility Hypothesis of the causation of senilitysenility cannot be attributed to the cessation of the power of reproduction ..."

5. A Text-book of the Practice of Medicine by Allen Corson Cowperthwaite (1901)
"senility. There is a tendency in all wasting diseases, ... The age at which this physiological senility begins, and the rapidity of its development varies ..."

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