Meaning of “superiority” - Learner’s Dictionary

superiority

noun [ U ] uk us /suːˌpɪəriˈɒrəti/
BETTER

the quality of being better than other things:

the superiority of modern design
OPINION

the opinion that you are better than other people:

She has an air of superiority.

(Definition of “superiority” from the Cambridge Learner’s Dictionary © Cambridge University Press)