quantum

noun

ˈkwän-təm How to pronounce quantum (audio)
Definition of quantumnext
as in amount
a given or particular mass or aggregate of matter the sum of human knowledge is now so immense that even a highly educated person can hope to absorb only a tiny quantum of it

Synonyms & Similar Words

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Example Sentences

Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Recent Examples of quantum The technology could also be useful for photonic quantum systems. — Neetika Walter, Interesting Engineering, 4 Sep. 2026 Conventional quantum teleportation sends quantum states one at a time. — IEEE Spectrum, 2 Sep. 2026 See All Example Sentences for quantum
Recent Examples of Synonyms for quantum
  1. amount
  2. quantity
Noun
  • The amount of business done between Premier League clubs quickly emerged as the defining theme of this summer’s transfer window.
    — Conor O'Neill, New York Times, 7 Sep. 2026
  • Maui could receive 2 to 4 inches, with locally higher amounts approaching 8 inches.
    — Anthony Thompson, USA Today, 7 Sep. 2026
Definition of amount
Noun
  • The quantity of shots allowed is a major reason, with 44 in total, 15 of which have been on target.
    — Anantaajith Raghuraman, New York Times, 4 Sep. 2026
  • At present, lithium-ion batteries excel at short-term electricity storage (hours), but hydrogen can be stored in large quantities in underground salt caverns for months, balancing seasonal swings in renewable energy production.
    — Mrigakshi Dixit, Interesting Engineering, 3 Sep. 2026
Definition of quantity

Phrases Containing quantum

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quantity
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quantum leap
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Cite this Entry

“Quantum.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/quantum. Accessed 12 Sep. 2026.

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More from Merriam-Webster on quantum

Britannica.com: Encyclopedia article about quantum

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