To impair or disqualify in any way by old age: used chiefly in the past participle: as, a superannuated magistrate.To set aside or displace as too old; specifically, to allow to retire from service on a pension, on account of old age or infirmity; give a retiring pension to; put on the retired list; pension off: as, to superannuate a seaman.To last beyond the year.To become impaired or disabled by length of years; live until weakened or useless.Superannuated; impaired or disabled through old age; lasting until useless.