/prom"euh neuhns/ , n.
1. Also, prominency . 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.
[ 1590-1600; prominentia a jutting out, protuberance. See PROMINENT, -ENCE ]
Syn. 2. promontory, height, precipice, peak.