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Pronunciation varies by accent · noun
(radio) A signal that propagates along the surface of the Earth..
Use groundwave when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Groundwave means (radio) A signal that propagates along the surface of the Earth..
The closest synonym depends on the sentence and intended sense.
The opposite depends on the specific sense.
Use groundwave where its definition matches the intended context.
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