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ground wave

noun
  1. a radio wave that propagates on or near the earth's surface and is affected by the ground and the troposphere.
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Origin of ground wave

First recorded in 1925–30
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for ground wave

ground wave

ground ray

noun
  1. a radio wave that travels directly between a transmitting and a receiving aerialCompare sky wave
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Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012