2 definitions found
From Webster's Revised Unabridged Dictionary (1913) [web1913]:
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.
{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.
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.
From WordNet r 1.6 [wn]:
protuberance
n 1: something that protrudes [syn: {bulge}, {bump}, {hump}, {gibbosity},
{gibbousness}, {jut}, {prominence}, {protrusion}, {extrusion},
{excrescence}]
2: anything that branches out from a central support [syn: {projection}]
more about protuberance
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