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, JSTOR Daily, 19 Dec. 2024

Another breed of hypothetical particle, axions are predicted to exist by quantum chromodynamics, which is our best quantum theory of the strong force that binds quarks together to form protons, neutrons and ultimately atomic nuclei. —Keith Cooper, Space.com, 19 Dec. 2024

The predictions of the flat quantum theory and the bulk gravitational theory match. —Charlie Wood, Quanta Magazine, 25 Sep. 2024

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