Category:Protuberance

Pro*tu"ber*ance, n. Etym: [cf. F. protubérance. See protuberant.]

Defn: 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.