Quick definitions from WordNet (F region)
▸ noun: the highest region of the ionosphere (from 90 to 600 miles up) that contains the highest concentration of free electrons and is most useful for long-range radio transmission
▸ Also see f_regions
▸ Words similar to f region
▸ Usage examples for f region
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▸ noun: the highest region of the ionosphere (from 90 to 600 miles up) that contains the highest concentration of free electrons and is most useful for long-range radio transmission
▸ Also see f_regions
▸ Words similar to f region
▸ Usage examples for f region
▸ Words that often appear near f region
▸ Rhymes of f region
▸ Invented words related to f region