arc minute

noun

Examples of arc minute in a Sentence

Recent Examples on the Web
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.
Each cluster spans about 45 arc minutes, or about one-third larger than the apparent diameter of the moon. Joe Rao, Space.com, 16 Jan. 2026 The technologies' outcome, like the number of stars, is also stupefying: The Mesopotamians might have been off by a finger or so held at arm's length, maybe a degree of arc, and Hipparchus was off by about half a degree, or 30 arc minutes. Ann Finkbeiner, Scientific American, 1 Feb. 2024

Word History

First Known Use

1892, in the meaning defined above

Time Traveler
The first known use of arc minute was in 1892

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Cite this Entry

“Arc minute.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/arc%20minute. Accessed 3 Feb. 2026.

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