nounūrĭonVRION☆ KeepMeaninga kind of earth in minesLewis & Short 1879ModernAs printed, 1879URIONLEWIS & SHORTURIONūrĭon (ūrĭum), ii, n. perh. from οὖρος, Ion. for ὄρος, a mountain, I. a kind of earth in mines, Plin. 33, 4, 21, § 75.Read the whole entry