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radio horizon
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noun
the locus of points on the earth's surface where rays from a transmitting antenna are tangent to the surface. The radio horizon for a fixed antenna varies with refraction by the atmosphere of radio waves.
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Words nearby radio horizon
radiogenic, radiogoniometer, radiogram, radiograph, radiography, radio horizon, radioimmunoassay, radioimmunology, radio interferometer, radioiodine, radioiron
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Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023