polytitanic acid

from The Collaborative International Dictionary of English v.0.48
titanic \ti*tan"ic\ (t[-i]*t[a^]n"[i^]k), a. [Cf. F. titanique.]
   (Chem.)
   Of or pertaining to titanium; derived from, or containing,
   titanium; specifically, designating those compounds of
   titanium in which it has a higher valence as contrasted with
   the {titanous} compounds.
   [1913 Webster]

   {titanic acid} (Chem.), a white amorphous powder, {Ti(OH)4},
      obtained by decomposing certain titanates; -- called also
      {normal titanic acid}. By extension, any one of a series
      of derived acids, called also {metatitanic acid},
      {polytitanic acid}, etc.

   {Titanic iron ore}. (Min.) See {Menaccanite}.
      [1913 Webster]
    

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