quantum theory

noun

1

: a theory in physics based on the concept of the subdivision of radiant energy into finite quanta and applied to numerous processes involving transference or transformation of energy in an atomic or molecular scale

2

: quantum mechanics

Examples of quantum theory in a Sentence

Recent Examples on the Web

Among those was providing the proper way to include gravity in the quantum theory of subatomic particles. —Tom Siegfried, Discover Magazine, 29 Nov. 2024

Figueiredo’s coincidence helped unify three different quantum theories under a new mathematical umbrella. —Charlie Wood, WIRED, 3 Nov. 2024

The book covers complex ideas about space, time, black holes and quantum theory. —Ashlyn Messier, Fox News, 29 Oct. 2023

Those LLMs cannot give a truly accurate and complete—and short—answer to a complex question any more than a physics professor can explain the fullness and the intricacies of quantum theory or general relativity 100% accurately in a few sentences to a general audience. —Tor Constantino, Mba, Forbes, 4 Nov. 2024

Word History

First Known Use

1912, in the meaning defined at sense 1

Kids Definition

quantum theory

noun

: a theory in physics based on the idea that radiant energy (as light) is composed of small separate packets of energy

Medical Definition

quantum theory

noun

: a theory in physics based on the concept of the subdivision of radiant energy into finite quanta and applied to numerous processes involving transference or transformation of energy in an atomic or molecular scale