from The American Heritage® Dictionary of the English Language, 4th Edition
- n. An electromagnetic wave within the range of radio frequencies.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. electromagnetic radiation having a wavelength between about .5 centimeters and 30,000 meters; used for the broadcasting of radio and television signals.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. an electromagnetic wave with a wavelength between 0.5 cm to 30,000 m
Sorry, no etymologies found.