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Vinony

hafnium

noun

  1. element with the atomic number of 72
L18266 on Wikidata ↗

Wiktionary

Pronunciation: /ˈhæfniəm/

noun

Etymology: From Latin Hafnia (“Copenhagen”) + -ium.

  1. A chemical element (symbol Hf) with an atomic number of 72: a lustrous, silvery-grey tetravalent transition metal.