2. / Dictionary
  3. / Index D

D layer: Meaning and Definition of

D layer

Pronunciation: [key]
  1. the lowest region of the ionosphere, characterized by mounting electron and ion density: exists, during the day only, from about 43 to 50 mi. (70 to 80 km) altitude. Cf. D region.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
DL D. Lit.
sandbbox logo
©2022 Sandbox Networks Inc. All rights reserved. Sandbox Learning is part of Sandbox & Co., a digital learning company.