What is the meaning of extremely low frequency?

noun

  • Below 3 kilohertz.
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APAWordNet. (2010). extremely low frequency. Retrieved September 21, 2026, from http://smartdefine.org/extremely_low_frequency/definitions/1211464
ChicagoWordNet. 2010. "extremely low frequency" http://smartdefine.org/extremely_low_frequency/definitions/1211464 (accessed September 21, 2026).
HarvardWordNet 2010, extremely low frequency, Smart Define, viewed 21 September, 2026, <http://smartdefine.org/extremely_low_frequency/definitions/1211464>.
MLAWordNet. "extremely low frequency" 23 October 2010. Web. 21 September 2026. <http://smartdefine.org/extremely_low_frequency/definitions/1211464>