RADIOSCOPY
Ra`di*os"co*py, n. [Radio- + -scopy.]
Defn: Direct observation of objects opaque to light by means of some other form of radiant energy, as the Röntgen rays. — Ra`di*o*scop"ic (#), *scop"ic*al (#), a.
RADIOTELEGRAM
Ra`di*o*tel"e*gram, n.
Defn: A message transmitted by radiotelegraph.
RADIOTELEGRAPH
Ra`di*o*tel"e*graph, n. [Radio-+ telegraph.]
Defn: A wireless telegraph.
RADIOTELEGRAPHIC
Ra`di*o*tel`e*graph"ic, a.
Defn: Of or pertaining to radiotelegraphy; employing, or used or employed in, radiotelegraphy.
RADIOTELEGRAPHY
Ra`di*o*te*leg"ra*phy, n. [Radio- + telegraphy.]
Defn: Telegraphy using the radiant energy of electrical (Hertzian) waves; wireless telegraphy; — the term adopted for use by the Radiotelegraphic Convention of 1912.