from The American Heritage® Dictionary of the English Language, 4th Edition
- Radiation; radiant energy: radiometer.
- Radioactive: radiochemistry.
- Radio: radiotelephone.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- radio (broadcasting)
- radius (bone)
from the GNU version of the Collaborative International Dictionary of English
- adj. Of or pertaining to, or employing, or operated by, radiant energy, specifically that of electromagnetic waves with frequencies between those of infrared radiation and X-rays; hence, pertaining to, or employed in, broadcast radio or television, microwaves, radiotelephones, etc..
- adj. of or pertaining to broadcast radio.
- A combining form indicating connection with, or relation to, a radius or ray; specifically (Anat.), with the radius of the forearm.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- adj. indicating radiation or radioactivity
- n. an electronic receiver that detects and demodulates and amplifies transmitted signals
- n. a communication system based on broadcasting electromagnetic waves
- v. transmit messages via radio waves
- n. medium for communication
From radiation.(American Heritage® Dictionary of the English Language, Fourth Edition)
Latin radius ("ray") (Wiktionary)