urium

Possibly from Basque ur (or rather, a Proto-Basque form of said term).

• (Classical Latin) IPA^(key): [ˈuː.ri.ũː]
• (modern Italianate Ecclesiastical) IPA^(key): [ˈuː.ri.um]

ūrium n (genitive ūriī or ūrī); second declension

1. (mineralogy) The earth that envelops the ore

Second-declension noun (neuter).

¹Found in older Latin (until the Augustan Age).

• urium in Gaffiot, Félix (1934) Dictionnaire illustré latin-français, Hachette.
• “urium”, in Harry Thurston Peck, editor (1898), Harper’s Dictionary of Classical Antiquities, New York: Harper & Brothers
• “urium”, in William Smith, editor (1854, 1857), A Dictionary of Greek and Roman Geography, volume 1 & 2, London: Walton and Maberly
• “urium”, in Richard Stillwell et al., editor (1976), The Princeton Encyclopedia of Classical Sites, Princeton, N.J.: Princeton University Press