solar mass

noun
  1. the unit, equivalent to the mass of the sun, in which the masses of stars and other celestial objects are given: a black hole of one million solar masses.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for solar mass

solar mass

noun
  1. an astronomical unit of mass equal to the sun's mass, 1.981  × 10 30 kilogramsSymbol: M ⊙
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012