Tsiolkovsky

[ tsyawl-kawf-skee, -kof-; Russian tsuhl-kawf-skyee ]
/ tsyɔlˈkɔf ski, -ˈkɒf-; Russian tsʌlˈkɔf skyi /

noun

Kon·stan·tin E·du·ar·do·vich [kon-stuh n-teen ed-wahr-duh-vich; Russian kuh n-stuhn-tyeen e-doo-ahr-duh-vyich] /ˈkɒn stən tin ɛdˈwɑr də vɪtʃ; Russian kən stʌnˈtyin ɛ duˈɑr də vyɪtʃ/,1857–1935, Russian inventor and rocket expert.