| / English Dictionary |
F REGION
| Pronunciation (US): |  | (GB): | |
I. (noun)
Sense 1
Meaning:
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
Synonyms:
Appleton layer; F layer; F region
Classified under:
Nouns denoting spatial position
Instance hypernyms:
part; region (the extended spatial location of something)
Holonyms ("F region" is a part of...):
ionosphere (the outer region of the Earth's atmosphere; contains a high concentration of free electrons)
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