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

hydrofluoric \hy`drofluor"ic\, a. hydro-, 2 + fluoric.
   chem.
   pertaining to, or containing, hydrogen and fluorine;
   fluohydric; as, hydrofluoric acid.
   1913 webster

   hydrofluoric acid chem., a colorless, mobile, volatile
      liquid, hf, very corrosive in its action, and having a
      strong, pungent, suffocating odor. it is produced by the
      action of sulphuric acid on fluorite, and is usually
      collected as a solution in water. it attacks all
      silicates, as glass or porcelain, is the agent employed in
      etching glass, and is preserved only in vessels of
      platinum, lead, caoutchouc, or gutta-percha.
      1913 webster
see also:
hydrofluoric acid hf 

[2] : WordNet (r) 2.0

hf
     n 1: a gray tetravalent metallic element that resembles zirconium
          chemically and is found in zirconium minerals; used in
          filaments for its ready emission of electrons syn: hafnium,
           atomic number 72
     2: 3 to 30 megahertz syn: high frequency
see also:
hafnium atomic number 72 high frequency 

[3] : Virtual Entity of Relevant Acronyms (Version 1.9, June 2002)

hf
     have fun telecommunication-slang, usenet, irc
     
     

Hf >> H Words
Hf, definition of term: Hf
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