EXTREMELY LOW FREQUENCY Definition & Meaning

extremely low frequency

noun

Radio.

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

extremely low frequency

noun

a radio frequency or radio-frequency band below 3 kilohertz ELF

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�y��vlog History and Origins

Origin of extremely low frequency¹

First recorded in 1965–70

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Example Sentences

Examples have not been reviewed.

The emissions fluctuate over time and produce an extremely low frequency signal that travels great distances. allowing sensors to help identify the submarines.

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In the United States, on one hand we have high frequency trading, but once those trades are filled, we have extremely low frequency clearing and settlement systems.

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Mr. Alexis, a former sailor, left behind a document accusing the Navy of attacking his brain with “extremely low frequency” electromagnetic waves.

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"ELF" is believed to stand for "extremely low frequency."

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During a press conference, the agency said that Aaron Alexis, 34, had believed he was being controlled by extremely low frequency radio waves.

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