F region

noun

Definition of F region

: the highest region of the ionosphere occurring from 80 miles (130 kilometers) to more than 300 miles (500 kilometers)

First Known Use of F region

1923, in the meaning defined above

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The first known use of F region was in 1923

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Dictionary Entries Near F region

Fregean

F region

freibergite

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Cite this Entry

“F region.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/F%20region. Accessed 5 Aug. 2021.

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