/sooh'peuhr an"yooh ayt'/ , v. , superannuated, superannuating .
v.t.
1. to allow to retire from service or office on a pension because of age or infirmity.
2. to set aside as out of date; remove as too old.
v.i.
3. to be or become old, out of date, or retired.
[ 1640-50; back formation from SUPERANNUATED ]