prominence UK /ˈpɹɒm.ɪ.nəns/US /ˈpɹɑ.mɪ.nəns/ noun5 •The state of being prominent: widely known or eminent. •Relative importance. •A bulge: something that bulges out or is protuberant or projects from a form. •A gaseous projection, often loop-shaped, springing from the surface of the Sun or a star. •Autonomous height; relative height or prime factor; a concept used in the categorization of hills and mountains. formsprominences