(1889–1972), Russian-born American aircraft designer; full name Igor Ivanovich Sikorsky. He built the first large four-engined aircraft, the Grand (1913), in his native country and went on to establish the Sikorsky company in the US. In 1939 he developed the first mass-produced helicopter.
Sikorsky, Igor in other Oxford dictionaries
Definition of Sikorsky, Igor in the US English dictionary