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Pronunciation: (prom'u-nuns), [key]
1. Also,prom'i•nen•cy.the state of being prominent; conspicuousness.
2. something that is prominent; a projection or protuberance: a prominence high over a ravine.
3. Also called solar prominence. Astron.an eruption of a flamelike tongue of relatively cool, high-density gas from the solar chromosphere into the corona where it can be seen during a solar eclipse or by observing strong spectral lines in its emission spectrum.

Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.

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