arcsecond
nounEtymology From arc + second.
1
A unit of angle; 1/60th of an arcminute, or 1/3600th of a degree.
- Synonyms
- second of arc, as, arcsec
- Derived terms
- microarcsecond, milliarcsecond, subarcsecond
- Related terms
- arcminute
Entry derived from the Wiktionary, under licence CC BY-SA 4.0 — list of authors.