celtium

 

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celtium

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celtium (uncountable)

1. (historical) The name originally proposed for chemical element number 72, now called hafnium; the discoverer, Georges Urbain, conjectured it to be a rare earth element, and proposed the symbol Ct), but subsequent work demonstrated it to be a transition element, and hafnium was given the symbol Hf.

• keltium (symbol Kt)

celtium n (genitive celtiī or celtī); second declension

1. carapace, tortoise shell

Second-declension noun (neuter).

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