d-layer

Noun
Synonyms: D-layerD region

WordNet 3.0

Noun (1)

  1. the lowest region of the ionosphere (35 to 50 miles up) that reflects low-frequency radio wavesSynonyms: D-layerD region
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Webster's Dictionary (GCIDE)

D-layer \D-layer\ n. the lowest region of the ionosphere (35 to 50 miles up) that reflects low-frequency radio waves.

Syn: D region. [WordNet 1.5]

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