stannum

Borrowed from Latin stannum.

• enPR: stănʹəm, IPA^(key): /ˈstænəm/

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stannum (uncountable)

1. (chemistry, rare) tin

• stagnum

Probably of Celtic origin, from Proto-Celtic *stagnos; see also Irish stán.

• (Classical Latin) IPA^(key): [ˈstan.nũː]
• (modern Italianate Ecclesiastical) IPA^(key): [ˈst̪an.num]

stannum n (genitive stannī); second declension

1. an alloy of silver and lead
2. tin (the metal)

In Later Latin, it seems that stannum was replaced by a colloquial variant stagnum.

Second-declension noun (neuter).

• “stannum”, in Charlton T. Lewis and Charles Short (1879) A Latin Dictionary, Oxford: Clarendon Press
• "stannum", in Charles du Fresne du Cange’s Glossarium Mediæ et Infimæ Latinitatis (augmented edition with additions by D. P. Carpenterius, Adelungius and others, edited by Léopold Favre, 1883–1887)
• stannum in Gaffiot, Félix (1934) Dictionnaire illustré latin-français, Hachette.
• “stannum”, in Harry Thurston Peck, editor (1898), Harper’s Dictionary of Classical Antiquities, New York: Harper & Brothers