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Noun: high frequency  hI'free-kwun(t)-see
  1. 3 to 30 megahertz
    "High frequency radio signals are used for international communications";
    - HF
     
  2. A pitch that is perceived as above other pitches
    "The soprano's high frequency notes shattered the glass";
    - high pitch

Derived forms: high frequencies

Type of: pitch, radio, radio frequency

Antonym: low frequency

Part of: electromagnetic spectrum

Encyclopedia: High frequency