We found 10 dictionaries that define the word second of arc:

General (5 matching dictionaries)

1. second of arc: Wiktionary
2. second of arc: Infoplease Dictionary
3. second of arc: Dictionary.com
4. Second of arc: Wikipedia, the Free Encyclopedia
5. Second of arc: TheFreeDictionary.com

Business (1 matching dictionary)

6. Second of arc: Legal dictionary

Computing (1 matching dictionary)

7. Second of arc: Encyclopedia

Medicine (1 matching dictionary)

8. Second of arc: Medical dictionary

Miscellaneous (1 matching dictionary)

9. Second of arc: Idioms

Tech (1 matching dictionary)

10. JPL Terms (No longer online)

Definitions from Wiktionary (second of arc) ▸ noun:  An angle, one sixtieth (1/60th) of a minute of arc or one 3600th of a degree. Similar: minute of arc, second, minute, just a second, sixty-second, sexagene, octant, sixtieth, quindecile, sexagesm, more... Opposite: degree, radian, minute, angle Phrases: Minute and second of arc, more... ▸ Words similar to second of arc ▸ Usage examples for second of arc ▸ Idioms related to second of arc ▸ Wikipedia articles (New!) ▸ Words that often appear near second of arc ▸ Rhymes of second of arc ▸ Invented words related to second of arc