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d region meaning

  "d region" in a sentence
  • Noun: D region
    1. The lowest region of the ionosphere (35 to 50 miles up) that reflects low-frequency radio waves
      - D-layer

    Derived forms: D regions

    Type of: part, region

    Part of: ionosphere

    Encyclopedia: D region

Examples

  1. Sky-wave ionospheric propagation is not possible during the day because of the attenuation of the signals on these frequencies caused by the D region in the ionosphere.
  2. When meiosis tries to do recombination between the strands at the C-D region, you end up with some number of A B C D E B A and C D E chromosomes, which tend not to be viable.

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