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Superannuate (v. t.) To impair or disquality on account of age or infirmity.
Superannuate (v. t.) To give a pension to, on account of old age or other infirmity; to cause to retire from service on a pension.
Superannuate (v. i.) To last beyond the year; -- said of annual plants.
Superannuated (imp. & p. p.) of Superannuate