solar prominences
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]


The Collaborative International Dictionary of English. 2000.

Look at other dictionaries:

  • Solar prominences — Prominence Prom i*nence, Prominency Prom i*nen*cy, n. [L. prominentia: cf. F. prominence. See {Prominent}. ] [1913 Webster] 1. The quality or state of being prominent; a standing out from something; conspicuousness. [1913 Webster] 2. That which… …   The Collaborative International Dictionary of English

  • solar prominences — noun plural : great clouds of luminous hydrogen, calcium, sodium, and other gases floating above the sun s chromosphere, occasionally erupting violently outward, and being especially numerous in regions above sunspots * * * solar prominences… …   Useful english dictionary

  • Solar prominence — with images of Jupiter and Earth for size comparison. Solar prominence video clip (high resolution) A prominence is a large, bright feature extending outward from the Sun …   Wikipedia

  • solar cycle — Astron. the variation of sunspots, prominences, flares, and other solar activity through an 11 year cycle. Also called solar activity cycle. Cf. sunspot cycle. * * * Period in which several important kinds of solar activity repeat, discovered in… …   Universalium

  • Solar protuberances — 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.… …   The Collaborative International Dictionary of English

  • solar prominence — Astron. prominence (def. 3). * * * Arched stream of hot gas projecting from the Sun s surface into the chromosphere or corona. Prominences can be hundreds of thousands of miles long and can be seen with the unaided eye during a total eclipse.… …   Universalium

  • solar cycle — noun 1. : a cycle of disturbances in the sun and its atmosphere (as the fluctuation in the numbers and areas of sunspots or the form and shape of the corona) of an average length of about 11 years 2. : cycle of the sun * * * Astron. the variation …   Useful english dictionary

  • solar activity — Astron. the sum of all variable and short lived disturbances on the sun, as sunspots, prominences, and solar flares. * * * …   Universalium

  • solar activity — Astron. the sum of all variable and short lived disturbances on the sun, as sunspots, prominences, and solar flares …   Useful english dictionary

  • sun — sunlike, adj. /sun/, n., v., sunned, sunning. n. 1. (often cap.) the star that is the central body of the solar system, around which the planets revolve and from which they receive light and heat: its mean distance from the earth is about 93… …   Universalium

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