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ground rent
ground rule
ground sloth
ground speed
ground squirrel
ground staff
ground state
ground substance
ground wave
Ground Zero
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ground wave
ground wave (plural ground waves)


noun 
Definition:
 
radio wave not reflected: a radio wave transmitted directly from a transmitter to a receiver, without reflection from the ionosphere
Encarta® World English Dictionary [North American Edition] © & (P)2009 Microsoft Corporation. All rights reserved. Developed for Microsoft by Bloomsbury Publishing Plc.
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