The Collaborative International Dictionary of English v.0.48:

Menaccanite \Me*nac"can*ite\, n. [From Menaccan, in Cornwall,
   where it was first found.] (Min.)
   An iron-black or steel-gray mineral, consisting chiefly of
   the oxides of iron and titanium. It is commonly massive, but
   occurs also in rhombohedral crystals. Called also titanic
   iron ore, and ilmenite.
   [1913 Webster]

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]