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
The development of a quantum internet, which uses the principles of quantum mechanics to transmit data, promises new capabilities in secure communication.
—
Aman Tripathi, Interesting Engineering, 25 Sep. 2025
Sound is also an important element in the film, encapsulating creation myths about sound and vibration being the source of all matter, ideas which are also present in string theory and quantum mechanics.
—Liz Shackleton, Deadline, 21 Sep. 2025
The answer is quantum mechanics, which determines whether a molecule can interact with the right type of radiation.
—Joseph Howlett, Quanta Magazine, 15 Sep. 2025
Quantum Technologies Quantum is another ground-breaking field, this one based on those classic ideas of quantum mechanics that seem, to many of us, so quaint and romantic in their theory, but coldly mechanical when applied to computer science.
—John Werner, Forbes.com, 12 Sep. 2025
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Aman Tripathi, Interesting Engineering, 25 Sep. 2025
Sound is also an important element in the film, encapsulating creation myths about sound and vibration being the source of all matter, ideas which are also present in string theory and quantum mechanics.
—Liz Shackleton, Deadline, 21 Sep. 2025
The answer is quantum mechanics, which determines whether a molecule can interact with the right type of radiation.
—Joseph Howlett, Quanta Magazine, 15 Sep. 2025
Quantum Technologies Quantum is another ground-breaking field, this one based on those classic ideas of quantum mechanics that seem, to many of us, so quaint and romantic in their theory, but coldly mechanical when applied to computer science.
—John Werner, Forbes.com, 12 Sep. 2025
See All Example Sentences for quantum mechanics
Cite this Entry
“Quantum mechanics.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/quantum%20mechanics. Accessed 29 Sep. 2025.
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