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second of arc. In DICTIOUS you will not only get to know all the dictionary meanings for the word
second of arc, but we will also tell you about its etymology, its characteristics and you will know how to say
second of arc in singular and plural. Everything you need to know about the word
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English
Noun
second of arc (plural seconds of arc)
- An angle, one sixtieth (1/60th) of a minute of arc or one 3600th of a degree.
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