quantum mechanics

noun

plural in form but singular or plural in construction
: a theory of matter that is based on the concept of the possession of wave properties by elementary particles, that affords a mathematical interpretation of the structure and interactions of matter on the basis of these properties, and that incorporates within it quantum theory and the uncertainty principle

called also wave mechanics

quantum mechanical adjective
quantum mechanically adverb

Examples of quantum mechanics in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
One of the earliest inventions based on quantum mechanics was the transistor, developed at Nokia Bell Labs in 1947. Nishant Batra, Forbes, 8 Jan. 2025 Feynman came of age during the dawn of quantum mechanics, when scientists began to recognize that atoms, electrons, light, and other sub-nanoscale objects—building blocks for everything in the universe—obey fundamentally different rules than the objects of everyday life. Charina Chou, Foreign Affairs, 7 Jan. 2025 The rising technology uses quantum mechanics to solve complex problems that traditional computing systems aren’t powerful enough to take on. Rocio Fabbro, Quartz, 24 Dec. 2024 Their paintings remind me of the weirdness of quantum mechanics, where different interpretations of reality may appear simultaneously, resulting in fragmented and abstract representations of the world. Ron Hart, SPIN, 9 Dec. 2024 See all Example Sentences for quantum mechanics 

Word History

First Known Use

1922, in the meaning defined above

Time Traveler
The first known use of quantum mechanics was in 1922

Dictionary Entries Near quantum mechanics

Cite this Entry

“Quantum mechanics.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/quantum%20mechanics. Accessed 15 Jan. 2025.

Medical Definition

quantum mechanics

noun, plural in form but singular or plural in construction
: a theory of matter that is based on the concept of the possession of wave properties by elementary particles, that affords a mathematical interpretation of the structure and interactions of matter on the basis of these properties, and that incorporates within it quantum theory and the uncertainty principle

called also wave mechanics

quantum mechanical adjective
quantum mechanically adverb

More from Merriam-Webster on quantum mechanics

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