Definition of "superannuate"

superannuate

/ˌsuːpəɹˈænjueɪt/

verb
third-person singular simple present superannuates, present participle superannuating, simple past and past participle superannuated
1. (transitive) To retire or put out of use due to age.
  Quotations
  These crumbling relicks and long fired particles superannuate such expectations; bones, hairs, nails, and teeth of the dead, were the treasures of old sorcerers.
  1658, Thomas Browne, “(please specify the page)”, in Hydriotaphia, Urne-buriall, […] Together with The Garden of Cyrus, […], London: […] Hen[ry] Brome […]
2. (transitive) To show to be obsolete due to age.
3. (intransitive) To retire due to age.
4. (intransitive) To become obsolete or antiquated.
5. (transitive) To give a pension to, on account of old age or other infirmity; to cause to retire from service on a pension.