• WordNet 3.6
    • n radiotelegraph the use of radio to send telegraphic messages (usually by Morse code)
    • n radiotelegraph telegraphy that uses transmission by radio rather than by wire
    • ***
Webster's Revised Unabridged Dictionary
    • n Radiotelegraph A wireless telegraph.
    • ***
Century Dictionary and Cyclopedia
    • n radiotelegraph A telegraph in which the transmission is by means of electric waves; a wireless telegraph.
    • ***


Webster's Revised Unabridged Dictionary
Radio-, + telegraph,


In literature:

She must agree, as respects the radiotelegraphic convention, to provisional rules to be communicated to her.
"The Story of the Great War, Volume VIII (of VIII)" by various