arcsecond
arc
ˈɑ:rk
aark
se
se
cond
kənd
kēnd
British pronunciation
/ˈɑːksɛkənd/

Definition & Meaning of "arcsecond"in English

Arcsecond
01

a unit of angular measurement equal to 1/60th of an arcminute, or 1/3,600th of a degree.

example
Examples
The star 's parallax was measured at 0.05 arcseconds, indicating its distance from Earth.
High-resolution telescopes can distinguish objects separated by less than one arcsecond.
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