noun Date: 1941 the mass of the sun used as a unit for the expression of the masses of other celestial objects and equal to about 2 × 10 30 kilograms
SOLAR MASS
Meaning of SOLAR MASS in English
Merriam Webster. Explanatory English dictionary Merriam Webster. Толковый словарь английского языка Мерриам-Уэбстер. 2012