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1 definition found
 for Solar Protuberances
From The Collaborative International Dictionary of English v.0.48 :

  Protuberance \Pro*tu"ber*ance\, n. [Cf. F. protub['e]rance. See
     Protuberant.]
     That which is protuberant swelled or pushed beyond the
     surrounding or adjacent surface; a swelling or tumor on the
     body; a prominence; a bunch or knob; an elevation.
     [1913 Webster]
  
     Solar protuberances (Astron.), certain rose-colored masses
        on the limb of the sun which are seen to extend beyond the
        edge of the moon at the time of a solar eclipse. They may
        be discovered with the spectroscope on any clear day.
        Called also solar prominences. See Illust. in Append.
        [1913 Webster]
  
     Syn: Projection, Protuberance. protuberance differs from
          projection, being applied to parts that rise from the
          surface with a gradual ascent or small angle; whereas a
          projection may be at a right angle with the surface.
          [1913 Webster]

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