What stands as the largest descriptive unit commonly invoked when delineating the boundaries of the observable cosmos?

Answer

Gigalight-Year (GLY)

The Gigalight-Year (GLY) is mentioned as the largest descriptive unit commonly invoked when discussing the grandest scale, such as the radius of the observable universe.

What stands as the largest descriptive unit commonly invoked when delineating the boundaries of the observable cosmos?
measurementastronomylargestunits