An Etymological Dictionary of Astronomy and Astrophysics

General:The state or quality of being bright.
Astronomy:The amount of light or other radiation received from a celestial object. It depends on the intrinsic brightness of the object, its distance and the amount of interstellar extinction. → luminosity.

Etymology (EN): → bright + → -ness.

Etymology (PE): Deraxšandegi, from deraxš, present stem of deraxšidan “to shine,” → bright,

• -andé adjective suffix + -gi noun suffix.