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Glite Dictionary
ELF

ELF

7 9.9
Radio waves with very low frequency below 3 kilohertz
  • noun
  • /iː ɛl ɛf/
  • Specialized
translation icon : ELF
  • Cotter describes the design of the ELF as closer to an aircraft than an automobile.
  • extremely low frequency
  • low frequency
  • frequency (ELF)

Yes, actually there's a system known as ELF, Extra low frequency.

Examples

  • Decreasing air drag, streamlining, and smoothing of components are just some of the concepts applied in the ELF's design.

    Blog text (13)

  • Significant relationships (P < 0.05) found between proximity to various sources of ELF EMF, both external and domestic, and various symptoms on primary analysis were largely not maintained when confounding factors were taken into account.

    Academic text (2008)

  • Yes, actually there's a system known as ELF, Extra low frequency.

    Shawn Ryan Show

  • Researchers are studying the effects of ELF waves on communication systems.

  • The submarine can communicate using ELF signals deep underwater.

  • Military operations sometimes utilize ELF technology for secure messaging.

Synonyms

extremely low frequency
vsELF
  • Specialized
1 6.8

Radio waves below 3 kilohertz that scientists and the military use for long-distance communication and measurement

is the abbreviated form used instead of the full name

Compounds

elf and safety
  • Slang
9.9

A joking name for strict health and safety rules

Elf and safety guideline
  • UK
9.2

A funny list of rules to avoid accidents at Christmas events

elf cup
  • Specialized
9.9

A small bright red mushroom shaped like a cup that grows on the forest floor

Surface Forms

ELF singular
ELFs plural

Morphology

ELF = E + L + F

ELF is an initialism/acronym whose component letters do not transparently convey the meaning; understanding requires knowing the expanded phrase.

Etymology

ELF stands for Extremely Low Frequency, which means very slow, very low radio waves. A helpful way to remember it is to picture a tiny 'elf' deep under the sea, because these waves travel far and can reach submarines and other deep places, so ELF today means those very low radio waves used for long-range, deep communication.