F-region

A form of F region — The middle layer of the ionosphere, located 90 km (56 mi) to 150 km (93 mi) above the surface of the Earth.

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Meanings

proper nounthe F-region
  1. alternativeAlternative form of F region.
Cite this entry
APA

F-region. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/F-region

MLA

“F-region.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/F-region. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “F-region,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/F-region.

Source: F-region on Wiktionary, CC BY-SA 4.0.