manganate

from WordNet (r) 3.0 (2006)

manganate
    n 1: a salt of manganic acid containing manganese as its anion

from The Collaborative International Dictionary of English v.0.48

Manganate \Man"ga*nate\, n. [Cf. F. manganate.] (Chem.)
   A salt of manganic acid.
   [1913 Webster]

   Note: The manganates are usually green, and are well-known
         compounds, though derived from a hypothetical acid.
         [1913 Webster]