1 retire (a person) with a pension.
2 dismiss or discard as too old for use, work, etc.
3 (as superannuated adj.) too old for work or use; obsolete.
Derivatives:
superannuable adj.
Etymology: back-form. f. superannuated f. med.L superannuatus f. L SUPER- + annus year
Useful english dictionary. 2012.