extremely low frequency

noun Radio.

any frequency between 30 and 300 hertz. Abbreviation: ELF, elf

Origin of extremely low frequency

First recorded in 1965–70

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for extremely low frequency

extremely low frequency

noun

a radio frequency or radio-frequency band below 3 kilohertzAbbreviation: ELF

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

extremely low frequency

Origin of .css-1fxfie5{font-size:22px;}@media (max-width:768px){.css-1fxfie5{font-size:18px;margin:0 10px 10px 0;word-break:break-all;word-wrap:break-word;-webkit-hyphens:auto;-moz-hyphens:auto;-ms-hyphens:auto;hyphens:auto;line-height:22px;}}extremely low frequency

extremely low frequency

Origin of extremely low frequency