superannuation

UK: /ˌsuːpərænjʊˈeɪʃ^ən/ US: (so̅o̅′pər an′yo̅o̅ ā′shən)

WordReference Random House Unabridged Dictionary of American English © 2025

su•per•an•nu•a•tion  (so̅o̅′pər an′yo̅o̅ ā′shən), n. 

1. the act of superannuating.
2. the state of being superannuated.
3. a pension or allowance to a superannuated person.

• superannuate + -ion 1650–60

Collins Concise English Dictionary © HarperCollins Publishers::

superannuation / ˌsuːpərˌænjʊˈeɪʃən/ noun

1. the amount deducted regularly from employees' incomes in a contributory pension scheme
2. the pension finally paid to such employees
3. the act or process of superannuating or the condition of being superannuated