Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
superannuation is a noun meaning "a monthly payment made to someone who is retired from work". It carries 3 recorded senses.
a monthly payment made to someone who is retired from work
the property of being out of date and not current
the act of discharging someone because of age (especially to cause someone to retire from service on a pension)
Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for superannuation come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.