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English Dictionary: HF by the DICT Development Group
2 results for HF
From WordNet (r) 3.0 (2006) [wn]:
Hf
n
  1. a grey tetravalent metallic element that resembles zirconium chemically and is found in zirconium minerals; used in filaments for its ready emission of electrons
    Synonym(s): hafnium, Hf, atomic number 72
  2. 3 to 30 megahertz
    Synonym(s): high frequency, HF
From Webster's Revised Unabridged Dictionary (1913) [web1913]:
   Hydrofluoric \Hy`dro*flu*or"ic\, a. [Hydro-, 2 + fluoric.]
      (Chem.)
      Pertaining to, or containing, hydrogen and fluorine;
      fluohydric; as, hydrofluoric acid.
  
      {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.
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©TU Chemnitz, 2006-2022
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