Superannuation \Su`per*an`nu*a"tion\, 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.

Source: Webster's Revised Unabridged Dictionary (1913)