quantum field theory


Definition of quantum field theory

: a theory in physics: the interaction of two separate physical systems (such as particles) is attributed to a field that extends from one to the other and is manifested in a particle exchange between the two systems

First Known Use of quantum field theory

1948, in the meaning defined above

Keep scrolling for more

Learn More about quantum field theory

Statistics for quantum field theory

Look-up Popularity

Time Traveler for quantum field theory

The first known use of quantum field theory was in 1948

See more words from the same year

More from Merriam-Webster on quantum field theory

Britannica.com: Encyclopedia article about quantum field theory

Comments on quantum field theory

What made you want to look up quantum field theory? Please tell us where you read or heard it (including the quote, if possible).


a sum of money that is sent as a payment

Get Word of the Day daily email!

Test Your Vocabulary

Time Traveler Quiz: Which Word Came First?

  • time traveler quiz which word came first
  • Which came first?
Spell It

Can you spell these 10 commonly misspelled words?

Dictionary Devil

Test Your Knowledge - and learn some interesting things along the way.

Love words? Need even more definitions?

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