superannuate

[soo-per-an-yoo-eyt] /ˌsu pərˈæn yuˌeɪt/
verb (used with object), superannuated, superannuating.
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to set aside as out of date; remove as too old.
verb (used without object), superannuated, superannuating.
3.
to be or become old, out of date, or retired.
Origin
1640–50; back formation from superannuated
British Dictionary definitions for superannuate
superannuate (ˌsuːpərˈænjʊˌeɪt)
 
vb
1.  to pension off
2.  to discard as obsolete or old-fashioned

Collins English Dictionary - Complete & Unabridged 10th Edition
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