Meaning of the word "quantum theory" in English

What does "quantum theory" mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

quantum theory

US /ˈkwɑːntəm ˈθiːəri/
UK /ˈkwɑːntəm ˈθiːəri/
"quantum theory" picture

Noun

1.

a theory of matter and energy based on the concept of quanta, especially quantum mechanics and quantum field theory.

Example:
Quantum theory revolutionized our understanding of the universe at the atomic and subatomic levels.
Many physicists are still working on extending and refining quantum theory.
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