HyperDicEnglishD ... D region

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Related WikiPedia: D region
English 1 sense of the expression D region:
NOUNlocationD region, D-layerthe lowest region of the ionosphere (35 to 50 miles up) that reflects low-frequency radio waves
EnglishD region: 1 sense noun 1, location
MeaningThe lowest region of the ionosphere (35 to 50 miles up) that reflects low-frequency radio waves.
SynonymD-layer
Instance ofregion, partThe extended spatial location of something
Part ofionosphereThe outer region of the Earth's atmosphere

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