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Definition of D Region in English :

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D Region meaning in English

Meaning of D Region in English

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D Region

see synonyms of d region

Noun

1. d region, d-layer

the lowest region of the ionosphere (35 to 50 miles up) that reflects low-frequency radio waves

WordNet Lexical Database for English. Princeton University. 2010.

D Region

see synonyms of d region
noun
the lowest region of the ionosphere, extending from a height of about 60 kilometres to about 90 kilometres: contains a low concentration of free electrons and reflects low-frequency radio waves
See also ionosphere

Collins English Dictionary. Copyright © HarperCollins Publishers

D Region

see synonyms of d region
the lowest atmospheric zone within the ionosphere, at an altitude of c. 55 to 90 km (c. 34 to 56 mi), containing the D layer

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

D Region

see synonyms of d region
n.
See D 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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