- Enter a word for the dictionary definition.
From The Collaborative International Dictionary of English v.0.48:
Vanadium \Va*na"di*um\, n. [NL., fr. Icel. Vanad[imac]s, a surname of the Scandinavian goddess Freya.] (Chem.) A rare element of the nitrogen-phosphorus group, found combined, in vanadates, in certain minerals, and reduced as an infusible, grayish-white metallic powder. It is intermediate between the metals and the non-metals, having both basic and acid properties. Symbol V (or Vd, rarely). Atomic weight 50.94 (C12=12.000). [1913 Webster +PJC]