nounpramnĭonPRAMNION☆ KeepMeaninga precious stoneLewis & Short 1879ModernAs printed, 1879PRAMNIONLEWIS & SHORTPRAMNIONpramnĭon, ĭi, n., I. a precious stone, the darkest kind of rock crystal, Plin. 37, 10, 63, § 173 (al. promnium).Read the whole entry