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Definition of F region
1. Noun. The highest region of the ionosphere (from 90 to 600 miles up) which contains the highest concentration of free electrons and is most useful for long-range radio transmission.
Exact synonyms: Appleton Layer, F Layer
Group relationships: Ionosphere
Generic synonyms: Part, Region
Group relationships: Ionosphere
Generic synonyms: Part, Region
Lexicographical Neighbors of F Region
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