Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “quantum mechanics”

quantum mechanics

noun [plural] uk   specialized us  
a theory that explains the behaviour of elementary particles, both separately and in groupsPhysics in general
(Definition of quantum mechanics from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
What is the pronunciation of quantum mechanics?
Add Cambridge dictionaries to your browser to your website

Translations of “quantum mechanics”

SMART Thesaurus: Physics in general

“quantum mechanics”: synonyms and related words:

Word of the Day


an alcoholic drink made from apples

Word of the Day


Read our blog about how the English language behaves.

Learn More

New Words

Find words and meanings that have just started to be used in English, and let us know what you think of them.

Learn More