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    quantum
    /ˈkwɒntəm/

    noun

    • 1. a discrete quantity of energy proportional in magnitude to the frequency of the radiation it represents.
    • 2. a required or allowed amount, especially an amount of money legally payable in damages: "the court must determine the quantum of compensation due"

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  2. dictionary.cambridge.org › dictionary › englishQUANTUM | English meaning - Cambridge Dictionary

    Quantum is a noun that means the smallest amount or unit of something, especially energy, in physics. Learn more about quantum theory, quantum computing, and related words and phrases from Cambridge Dictionary.

  3. www.merriam-webster.com › dictionary › quantumQuantum Definition & Meaning - Merriam-Webster

    Learn the origin, usage, and synonyms of the word quantum, which can mean a small amount of energy, a subdivision of a physical magnitude, or a large improvement. Find examples of quantum in sentences and related phrases and articles.

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  5. en.wikipedia.org › wiki › QuantumQuantum - Wikipedia

    A quantum is the minimum amount of a physical property involved in an interaction, such as energy, charge or spin. Learn how Planck, Einstein and others discovered and used the concept of quantization in physics.

  6. www.britannica.com › science › quantumQuantum | Definition & Facts | Britannica

    Quantum is a discrete natural unit of energy, charge, angular momentum, or other physical property. Learn how quantum phenomena occur in light, matter, and submicroscopic systems, and how they are described by quantum mechanics.

    • The Editors of Encyclopaedia Britannica

  7. www.dictionary.com › browse › quantumQUANTUM Definition & Meaning | Dictionary.com

    Quantum is a noun that means the smallest quantity of some physical property, such as energy, that a system can possess according to the quantum theory. It can also mean a sudden and significant change or improvement.

  8. scienceexchange.caltech.edu › topics › quantum-scienceWhat Is Quantum Physics? - Caltech Science Exchange

    Quantum physics is the study of matter and energy at the most fundamental level. It aims to uncover the properties and behaviors of the very building blocks of nature, such as quanta, wave-particle duality, superposition, uncertainty principle, entanglement, and more.

  9. en.wikipedia.org › wiki › Quantum_mechanicsQuantum mechanics - Wikipedia

    Quantum mechanics is a theory that describes the behavior of nature at and below the scale of atoms. It has features such as wave–particle duality, uncertainty principle, and probabilistic predictions.