On Fri, 19 Sep 2008 13:56:14 -0500, cuhulin wrote:

Radio comes from the word/thingy/term,,, Radius. cuhulin

radio Look up radio at Dictionary.com
"wireless transmission with radio waves," 1907, abstracted from
earlier combinations such as radiophone (1881) and radio-telegraphy
(1898), from radio-, comb. form of radiation (q.v.). Use for "radio
receiver" is first attested 1917; sense of "sound broadcasting as a
medium" is from 1922. Wireless remained more widespread until World War
II, when military preference for radio turned the tables. The verb is
attested from 1919

http://www.etymonline.com/index.php?term=radio