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 experiments revealed signatures of the non-Hermitian skin effect, where quantum states concentrate near one end of the system instead of remaining evenly distributed. — Aamir Khollam, Interesting Engineering, 10 July 2026 With quantum computing, industry, academia and government should work together early on standards, risk frameworks and transparency. — Pravir Malik, Forbes.com, 10 July 2026 See All Example Sentences for quantum
Recent Examples of Synonyms for quantum
  1. amount
  2. quantity
Noun
  • Ritolia estimates Russian gasoline production is currently running at around 20% below domestic demand because of the Ukrainian strikes, with refinery runs (the amount of crude oil refineries are processing) at multi-year lows.
    — Clare Sebastian, CNN Money, 6 July 2026
  • Under an existing state appropriations restraint, also known as the Gann Limit, lawmakers cannot spend more than an amount determined by a formula that takes annual tax proceeds, changes to the population and cost of living into consideration.
    — Iris Kwok, Los Angeles Times, 6 July 2026
Definition of amount
Noun
  • Users can sign up for free on the website with their email, then enter the items in their fridge and pantry, along with their quantities and expiration dates, to get access to Grocery Genius’ features.
    — Chiara Kim, PEOPLE, 10 July 2026
  • Going forward, scientists still need to conduct broader lab tests on human cells in order to figure out how severely various quantities of 6PPD-Q contribute to Alzheimer’s disease.
    — Joe Wilkins, Futurism, 9 July 2026
Definition of quantity

Phrases Containing quantum

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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 Jul. 2026.

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More from Merriam-Webster on quantum

Nglish: Translation of quantum for Spanish Speakers

Britannica.com: Encyclopedia article about quantum

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