quantum electrodynamics

noun

plural in form but usually singular in construction
: quantum mechanics applied to electrical interactions (as between nuclear particles)

Word History

First Known Use

1927, in the meaning defined above

Time Traveler
The first known use of quantum electrodynamics was in 1927

Browse Nearby Words

Cite this Entry

“Quantum electrodynamics.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/quantum%20electrodynamics. Accessed 9 Sep. 2025.

More from Merriam-Webster on quantum electrodynamics

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!