[syn: radiotelegraph, radiotelegraphy, wireless telegraph, wireless telegraphy]
The Collaborative International Dictionary of English v.0.48:
Radiotelegraph \Ra`di*o*tel"e*graph\
   (r[=a]`d[i^]*[o^]*t[e^]l"[-e]*gr[a^]f), n. [Radio- +
   telegraph.]
   A wireless telegraph.
   [Webster 1913 Suppl.]
WordNet (r) 3.0 (2006):
radiotelegraph
    n 1: telegraphy that uses transmission by radio rather than by
         wire [syn: radiotelegraph, radiotelegraphy, wireless
         telegraphy]
    2: the use of radio to send telegraphic messages (usually by
       Morse code) [syn: radiotelegraph, radiotelegraphy,
       wireless telegraph, wireless telegraphy]