quantum

US /ˈkwɑːn.t̬əm/
UK /ˈkwɑːn.t̬əm/
"quantum" picture
1.

a discrete quantity of energy proportional in magnitude to the frequency of the radiation it represents

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In quantum physics, energy is exchanged in discrete packets called quanta.
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The photoelectric effect demonstrates the particle nature of light, where light energy is absorbed in quanta.
2.

a specified amount

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There has been a significant quantum of research on this topic.
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The new policy represents a major quantum leap in environmental protection.
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amountquantityportionmeasurequota
1.

relating to or involving the principles of quantum mechanics

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Scientists are studying the quantum properties of new materials.
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Quantum computing promises to revolutionize many fields.
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quantum theoryquantum mechanicsquantum leap