'Superannuate' definitions:

Definition of 'superannuate'

From: WordNet
verb
Retire and pension (someone) because of age or physical inability
verb
Declare to be obsolete
verb
Become obsolete
verb
Retire or become ineligible because of old age or infirmity

Definition of 'Superannuate'

From: GCIDE
  • Superannuate \Su`per*an"nu*ate\, v. t. [imp. & p. p. Superannuated; p. pr. & vb. n. Superannuating.] [Pref. super- + L. annus a year.]
  • 1. To impair or disquality on account of age or infirmity. --Sir T. Browne. [1913 Webster]
  • 2. To give a pension to, on account of old age or other infirmity; to cause to retire from service on a pension. [1913 Webster]

Definition of 'Superannuate'

From: GCIDE
  • Superannuate \Su`per*an"nu*ate\, v. i. To last beyond the year; -- said of annual plants. [Obs.] --Bacon. [1913 Webster]

Synonyms of 'superannuate'

From: Moby Thesaurus