Meaning of “paradox” - Learner’s Dictionary

paradox

noun [ C ] uk us /ˈpærədɒks/

a situation that seems very strange or impossible because of two opposite qualities or facts

paradoxical uk us /ˌpærəˈdɒksɪkəl/ adjective

involving a paradox:

It seems paradoxical to me but if you drink hot tea, it seems to cool you down.
paradoxically adverb

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