vanadium (V) /vənā″dē·əm/ [ONorse, Vanadis, Freya, goddess of fertility] , a grayish metallic element. Its atomic number is 23; its atomic mass is 50.942. Absorption of vanadium compounds results in a condition called vanadiumism, characterized by anemia, conjunctivitis, pneumonitis, and irritation of the respiratory tract.
