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  1. Quantum - Wikipedia

    In physics, a quantum (pl.: quanta) is the minimum amount of any physical entity (physical property) involved in an interaction. The fundamental notion that a property can be "quantized" is referred to as …

  2. What 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.

  3. QUANTUM Definition & Meaning - Merriam-Webster

    The meaning of QUANTUM is quantity, amount. How to use quantum in a sentence.

  4. Demystifying Quantum: It’s Here, There and Everywhere

    Apr 10, 2024 · Quantum, often called quantum mechanics, deals with the granular and fuzzy nature of the universe and the physical behavior of its smallest particles. The idea of physical granularity is like …

  5. Science 101: Quantum Mechanics - Argonne National Laboratory

    So, what is quantum? In a more general sense, the word “ quantum” can refer to the smallest possible amount of something. The field of quantum mechanics deals with the most fundamental bits of …

  6. Quantum | Definition & Facts | Britannica

    Mar 1, 2026 · Quantum, in physics, discrete natural unit, or packet, of energy, charge, angular momentum, or other physical property. Light, for example, appearing in some respects as a …

  7. What is Quantum Physics? A Beginner’s Guide

    Apr 28, 2025 · Quantum physics is the science that explores the deepest layers of reality. It investigates how nature behaves at the smallest scales imaginable—inside atoms, within the fabric of light, and …

  8. QUANTUM | English meaning - Cambridge Dictionary

    QUANTUM definition: 1. the smallest amount or unit of something, especially energy: 2. the smallest amount or unit of…. Learn more.

  9. Quantum - definition of quantum by The Free Dictionary

    Define quantum. quantum synonyms, quantum pronunciation, quantum translation, English dictionary definition of quantum. n. pl. quan·ta 1. Physics a. The smallest amount of a physical quantity that can …

  10. QUANTUM definition and meaning | Collins English Dictionary

    In physics, quantum theory and quantum mechanics are concerned with the behaviour of atomic particles. Both quantum mechanics and chaos theory suggest a world constantly in flux.