[1] : The Collaborative International Dictionary of English v.0.48

menaccanite \menac"canite\, 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
see also:
titanic iron ore ilmenite 

[2] : The Collaborative International Dictionary of English v.0.48

titanic \titan"ic\ t-ita^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, tioh4,
      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
see also:
titanous titanic acid tioh4 normal titanic acid metatitanic acid polytitanic acid 
titanic iron ore menaccanite 

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