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arcsecond

 - 2 dictionary results

arc second

 
Use arcsecond in a Sentence
–noun
Astronomy. second 2 (def. 4).
Also, arc-second.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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arcsecond

noun
a 60th part of a minute of arc; "the treasure is 2 minutes and 45 seconds south of here" [syn: second] 
WordNet® 3.0, © 2006 by Princeton University.
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