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From Ilmensky Mountains + -ium. Compare ilmenite.
Etymology from Wiktionary, CC BY-SA 4.0.
ilmenium
Today it means: A supposed chemical element, later found to be a mixture of niobium and tantalum. Full definition →
Today it means: A supposed chemical element, later found to be a mixture of niobium and tantalum. Full definition →
From Ilmensky Mountains + -ium. Compare ilmenite.
Etymology from Wiktionary, CC BY-SA 4.0.