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  1. Oxford Dictionary

    quantum

    • IPA[ˈkwɒntəm]

    英式

    • n.
      a discrete quantity of energy proportional in magnitude to the frequency of the radiation it represents.；an analogous discrete amount of any other physical quantity, such as momentum or electric charge.

    • noun: quantum, plural noun: quanta

    • 釋義

    名詞

    • 1. a discrete quantity of energy proportional in magnitude to the frequency of the radiation it represents.
    • ▪ an analogous discrete amount of any other physical quantity, such as momentum or electric charge.
    • ▪ the unit quantity of acetylcholine released at a neuromuscular junction by a single synaptic vesicle, contributing a discrete small voltage to the measured end-plate potential.
    • 2. a required or allowed amount, especially an amount of money legally payable in damages the court must determine the quantum of compensation due
    • ▪ a share or portion each man has only a quantum of compassion