noun
: the broad band of the spectrum-luminosity diagram which contains the great majority of stars and the sun and for which the absolute visual magnitudes range from about — 3 for stars of spectral type B to 12 for stars of spectral type M
noun
: the broad band of the spectrum-luminosity diagram which contains the great majority of stars and the sun and for which the absolute visual magnitudes range from about — 3 for stars of spectral type B to 12 for stars of spectral type M
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012