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Definition of F Region in English :

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F Region meaning in English

Meaning of F Region in English

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F Region pronunciation in English

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F Region

see synonyms of f region

Noun

1. appleton layer, f layer, f region

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

WordNet Lexical Database for English. Princeton University. 2010.

F Region

see synonyms of f region
noun
the highest region of the ionosphere, extending from a height of about 150 kilometres to about 1000 kilometres. It contains the highest proportion of free electrons and is the most useful region for long-range radio transmission
. Also called: Appleton layer See also ionosphere

Collins English Dictionary. Copyright © HarperCollins Publishers

F Region

see synonyms of f region
the highest atmospheric zone within the ionosphere, at an altitude of c. 140 to 400 km (c. 90 to 250 mi), containing the F layers

Webster’s New World College Dictionary, 4th Edition. Copyright © 2010 by Houghton Mifflin Harcourt. All rights reserved.

F Region

see synonyms of f region
n.
See F layer.

The American Heritage ® Dictionary of the English Language, Fifth Edition copyright ©2018 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

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