minute of arc

noun

An angle, one sixtieth of a degree or 1/21,600 of a complete circle.

“A geographical mile is exactly equal to one minute of arc along the Earth's equator.”

Similar
arcminarcminuteminuteminute of angleMOA
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Meanings

nounminute of arc (plural minutes of arc)

plural minutes of arc

  1. An angle, one sixtieth of a degree or 1/21,600 of a complete circle.

    A geographical mile is exactly equal to one minute of arc along the Earth's equator.

    Synonyms: arcmin, arcminute, minute, minute of angle, MOA

Synonyms & antonyms

nounAn angle, one sixtieth of a degree or 1/21,600 of a complete circle.

Similar
arcminarcminuteminuteminute of angleMOA

More synonyms by meaning

nouna unit of angular distance equal to a 60th of a degree

Similar
minutearcminute
Broader
angular unit
Also see
arcminuteminuteminute of angle

Synonym sets from Open English WordNet, CC BY 4.0.

Cite this entry
APA

minute of arc. (n.d.). In WatkinsX Dictionary. Retrieved November 2, 2026, from https://dictionary.watkinsx.com/word/minute%20of%20arc

MLA

“minute of arc.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/minute%20of%20arc. Accessed November 2, 2026.

Chicago

WatkinsX Dictionary, s.v. “minute of arc,” accessed November 2, 2026, https://dictionary.watkinsx.com/word/minute%20of%20arc.

Source: minute of arc on Wiktionary, CC BY-SA 4.0.