ultralow frequency

noun

: a radio frequency in the lower range of the radio spectrum from about 300 Hz to 3 kHz
Communicating with subs thousands of miles away, under thousands of feet of ocean, requires ultralow frequencies Noah Shachtman, Wired, August 2009
abbreviation ULF
see Radio Frequencies Table

Word History

First Known Use

1994, in the meaning defined above

Time Traveler
The first known use of ultralow frequency was in 1994

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Cite this Entry

“Ultralow frequency.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/ultralow%20frequency. Accessed 26 Nov. 2022.

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