'Radiotelegraphy' definitions:

Definition of 'radiotelegraphy'

(from WordNet)
noun
Telegraphy that uses transmission by radio rather than by wire [syn: radiotelegraph, radiotelegraphy, wireless telegraphy]
noun
The use of radio to send telegraphic messages (usually by Morse code) [syn: radiotelegraph, radiotelegraphy, wireless telegraph, wireless telegraphy]

Definition of 'Radiotelegraphy'

From: GCIDE
  • Radiotelegraphy \Ra`di*o*te*leg"ra*phy\ (r[=a]`d[i^]*[o^]*t[e^]*l[e^]g"r[.a]*f[y^]), n. [Radio- + telegraphy.] Telegraphy using the radiant energy of radio waves; wireless telegraphy; -- the term adopted for use by the Radiotelegraphic Convention of 1912. [Webster 1913 Suppl.]