paradox

A statement that seems to contradict itself but may nonetheless be true.

A person, thing, or situation that exhibits inexplicable or contradictory aspects.

A statement that is self-contradictory or logically untenable, though based on a valid deduction from acceptable premises.

A statement or proposition which at first view seems absurd, or at variance with common sense, or which actually or apparently contradicts some ascertained truth or received opinion, though on investigation or when explained it may appear to be well founded. As a rhetorical figure its use is well exemplified in the first quotation.

The platypus or water-mole, Ornithorhynchus paradoxus.

A tenet or proposition contrary to received opinion; an assertion or sentiment seemingly contradictory, or opposed to common sense; that which in appearance or terms is absurd, but yet may be true in fact.

See under Hydrostatic.

A self-contradictory statement, which can only be true if it is false, and vice versa. transl. usage

A counterintuitive conclusion or outcome. usage syn.

A claim that two apparently contradictory ideas are true. transl.