Function: noun
Date: 1785
: the luminosity of a celestial body (as a star) as observed from the earth ― compare ABSOLUTE MAGNITUDE
Function: noun
Date: 1785
: the luminosity of a celestial body (as a star) as observed from the earth ― compare ABSOLUTE MAGNITUDE
Merriam Webster Collegiate English Dictionary. Merriam Webster - Энциклопедический словарь английского языка. 2012