/ Thesaurus / I Synonyms of igor ivanovich sikorsky Find synonyms for: Noun1. Sikorsky, Igor Sikorsky, Igor Ivanovich Sikorskyusage: United States industrialist (born in Russia) who designed the first four-engine airplane and the first mass-produced helicopter (1889-1972)WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: penury Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language