1. arcsecond - noun
ยท a 60th part of a minute of arc; "the treasure is 2 minutes and 45 seconds south of here"
Synonym(s): second
Hypernym(s): angular_unit
Try Again
ยท a 60th part of a minute of arc; "the treasure is 2 minutes and 45 seconds south of here"
Synonym(s): second
Hypernym(s): angular_unit