Definition of Tsiolkovsky, Konstantin in English:

Tsiolkovsky, Konstantin

Line breaks: Kon|stan¦tin Tsi¦ol|kov¦sky
Pronunciation: /ˌtsiːɒlˈkɒfski
( 1857–1935), Russian aeronautical engineer; full name Konstantin Eduardovich Tsiolkovsky. Tsiolkovsky carried out pioneering theoretical work on multistage rockets, jet engines, and space flight, and his proposal for the use of liquid fuel pre-dated the work of R. H. Goddard by nearly forty years.

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Word of the day retroflex
Pronunciation: ˈrɛtrə(ʊ)flɛks
turned backwards