Webster’s Revised Unabridged Dictionary · 1913
Superannuation
Su′per·an′nu·a′tion (·ăn′ū·ā′shŭn), n. The state of being superannuated, or too old for office or business; the state of being disqualified by old age; decrepitude.
The world itself is in a state of superannuation. Cowper.
Slyness blinking through the watery eye of superannuation. Coleridge.