Mar·co·ni 
(mär-kōnē), Guglielmo 1874-1937.
(mär-kōnē), Guglielmo 1874-1937. Italian engineer and inventor who in 1901 transmitted long-wave radio signals across the Atlantic Ocean. He shared the 1909 Nobel Prize in physics.
Guglielmo Marconiphotographed c. 1903