Definition from Wiktionary, the free dictionary
Alternative forms 
- superiourity (obsolete)
superiority (plural superiorities)
- the state of being superior
- Many colleges want to achieve football superiority.
- 2012 April 15, Phil McNulty, “Tottenham 1-5 Chelsea”, BBC:
- Chelsea will point to that victory margin as confirmation of their superiority - but Spurs will complain their hopes of turning the game around were damaged fatally by Atkinson's decision.
the state of being superior