Va*na"di*um (?), n. [NL., fr. Icel. Vanadis, 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 51.2.
© Webster 1913.