A 60th part of a minute of arc.
1Then if you break this arcsecond into a million pieces-youget a microarcsecond.
2But these are small angles, typically just fractions of an arcsecond.
3From the Sobral images, they found a light-bending figure of 1.98 arcseconds.
4Each degree can be broken into 60 arcminutes and each minute is 60 arcseconds.
Translations for arcsecond