Kennelly-Heaviside layer

noun

A layer of ionized gas occurring between roughly 90–150 km (56–93 mi) above the ground. It reflects medium-frequency radio waves, and thus enables them to be propagated beyond the horizon.

Similar
E regionHeaviside layer
Ask AI about this wordChatGPTClaudePerplexityGoogle AIGrok

Meanings

nounKennelly-Heaviside layer (plural Kennelly-Heaviside layers)

plural Kennelly-Heaviside layers

  1. A layer of ionized gas occurring between roughly 90–150 km (56–93 mi) above the ground. It reflects medium-frequency radio waves, and thus enables them to be propagated beyond the horizon.

    Synonyms: E region, Heaviside layer

Synonyms & antonyms

nounA layer of ionized gas occurring between roughly 90–150 km (56–93 mi) above the ground. It reflects medium-frequency radio waves, and thus enables them to be propagated beyond the horizon.

Similar
E regionHeaviside layer
Also see
heaviside layer

Origin

Named after Arthur E. Kennelly and Oliver Heaviside.

Full word history & related roots →
Cite this entry
APA

Kennelly-Heaviside layer. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/Kennelly-Heaviside%20layer

MLA

“Kennelly-Heaviside layer.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/Kennelly-Heaviside%20layer. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “Kennelly-Heaviside layer,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/Kennelly-Heaviside%20layer.

Source: Kennelly-Heaviside layer on Wiktionary, CC BY-SA 4.0.