quantum gravity

noun

: a quantum theory of the gravitational field

specifically : a theory thought by physicists to be possible which would combine general relativity with quantum mechanics

Word History

First Known Use

1970, 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