プロミネンスプロミネンスFreq.FrequencyTop 100,000Meanings1nounsolar prominenceastronomy›Astronomy term for a large, bright, gaseous feature extending outward from the Sun's surface. The Japanese synonym 紅炎 (こうえん) is also used.See also: 紅炎 (こうえん)太たい陽ようの縁