Russell's paradox

noun

Rus·​sell's paradox

ˈrəsəlz-

: a paradox that discloses itself in forming a class of all classes that are not members of themselves and in observing that the question of whether it is true or false if this class is a member of itself can be answered both ways compare liar paradox, vicious circle principle

Word History

Etymology

after Bertrand Russell

First Known Use

1904, in the meaning defined above

The Ultimate Dictionary Awaits

Expand your vocabulary and dive deeper into language with Merriam-Webster Unabridged.

1. Expanded definitions
2. Detailed etymologies
3. Advanced search tools
4. All ad-free

Discover what makes Merriam-Webster Unabridged the essential choice for true word lovers.

Start Your Free Trial Now