ground-wave

ground wave

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

Origin:
1925–30

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Collins
World English Dictionary
ground wave or ground ray
 
n
Compare sky wave a radio wave that travels directly between a transmitting and a receiving aerial
 
ground ray or ground ray
 
n

Collins English Dictionary - Complete & Unabridged 10th Edition
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