This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

• Lexulous
• Wordscraper
• Wordosaur

n. Telegraphy in which messages are transmitted by radio instead of wire.

n. The process and techniques of sending telegrams using radio waves rather than wires.

n. Telegraphy using the radiant energy of radio waves; wireless telegraphy; -- the term adopted for use by the Radiotelegraphic Convention of 1912.

n. Telegraphy by means of electric waves; wireless telegraphy.

n. the use of radio to send telegraphic messages (usually by Morse code)

n. telegraphy that uses transmission by radio rather than by wire

"Paul Dane of the Society of Wireless Pioneers provided invaluable insights into the International Morse Code and its difference from Japanese radiotelegraphy."

wireless    radio-