WordReference Random House Unabridged Dictionary of American English © 2026
luminos′ity class′, [Astron.]
  1. Astronomya classification of stars of a given spectral type according to their luminosity, breaking them down into dwarfs, giants, and supergiants.

'luminosity class' also found in these entries (note: many are not synonyms or translations):
dwarf star

Forum discussions with the word(s) "luminosity class" in the title:


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