Mol`yb*de"num (?), n. [NL.: cf. F. molybdene. See Molybdena.] Chem.
A rare element of the chromium group, occurring in nature in the minerals molybdenite and wulfenite, and when reduced obtained as a hard, silver-white, difficulty fusible metal. Symbol Mo. Atomic weight 95.9.
© Webster 1913.