#infrared_frequency__infrared  the infrared part of the electromagnetic spectrum; electromagnetic wave frequencies below the visible range; "they could sense radiation in the infrared"
  supertype:  frequency__frequence__oftenness__oftennes  the number of occurrences within a given time period (usually 1 second); "the frequency of modulation was 40 cycles per second"
  part of:  infrared_spectrum  the spectrum of infrared radiation
     part of:  electromagnetic_spectrum__electromagneticspectrum  the entire frequency range of electromagnetic waves

No statement uses or specializes infrared_frequency; click here to add one.