born May 25, 1889, Kiev died Oct. 26, 1972, Easton, Conn., U.S. Russian-born U.S. pioneer in aircraft design who is best known for his successful development of the helicopter.
SIKORSKY, IGOR (IVAN)
Meaning of SIKORSKY, IGOR (IVAN) in English
Britannica English vocabulary. Английский словарь Британика. 2012