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3 definitions found
 for protuberance
From The Collaborative International Dictionary of English v.0.48 :

  Protuberance \Pro*tu"ber*ance\, n. [Cf. F. protub['e]rance. See
     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]

From WordNet (r) 3.0 (2006) :

      n 1: something that bulges out or is protuberant or projects
           from its surroundings; "the gun in his pocket made an
           obvious bulge"; "the hump of a camel"; "he stood on the
           rocky prominence"; "the occipital protuberance was well
           developed"; "the bony excrescence between its horns" [syn:
           bulge, bump, hump, swelling, gibbosity,
           gibbousness, jut, prominence, protuberance,
           protrusion, extrusion, excrescence]
      2: the condition of being protuberant; the condition of bulging
         out; "the protuberance of his belly"

From Moby Thesaurus II by Grady Ward, 1.0 :

  43 Moby Thesaurus words for "protuberance":
     bas-relief, bellying, boldness, bulge, bulging, embossment,
     eminence, excrescence, excrescency, extrusion, feel, finish,
     gibbosity, gibbousness, grain, granular texture, high relief,
     indentation, jut, knub, low relief, nap, nub, pile, pit, pock,
     projection, prominence, protrusion, protuberancy, relief, salience,
     salient, shag, structure, surface, surface texture, texture,
     tuberosity, tuberousness, wale, weave, woof

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