quantum number

noun

: any of a set of numbers that indicate the magnitude of various discrete quantities (such as electric charge) of a particle or system and that serve to define its state

Examples of quantum number in a Sentence

Recent Examples on the Web Middle Sister prattled on about how an atom having six principal quantum numbers can yield several emission lines, or some such. Chicago Tribune, chicagotribune.com, 2 June 2018

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'quantum number.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

First Known Use

1902, in the meaning defined above

Time Traveler
The first known use of quantum number was in 1902

Dictionary Entries Near quantum number

Cite this Entry

“Quantum number.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/quantum%20number. Accessed 21 Jun. 2024.

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