a unit of angular measurement
The second division of a degree of arc. One sixtieth of an arcminute. (1/3600th of a degree.)
One-sixtieth of a minute of arc. 1/3600 of a degree.
(") A measure for very small angles. 1 arcsecond = 1/60 arcminute = 1/3600 degree.
a unit of angular size equal to 1/3,600 of a degree (or 1/60 of an arcminute).
A small measure of angular distance. There are 60 arcseconds in one arcminute and therefore 3600 arcseconds in one degree.