There is currently only one astrononical definition for the tag 'massejection'.
mass-loss, mass loss, mass-ejection
fuorionisstar, pcygnilineprofile, wolfrayetstar, binarystar, cataclysmicvariablestar, circumstellardisk, circumstellarenvelope, circumstellarmatter, circumstellarshell, corona, eruptivebinarystar, massexchange, massflow, masstransfer, massivestar, nova, planetarynebula, stellarevolution, supernova