cosmonaut n 1: a person trained to travel in a spacecraft; "the Russians called their astronauts cosmonauts" [syn: {astronaut}, {spaceman}, {cosmonaut}]
cosmonaut \cosmonaut\ n. [Russ. kosmonavt from kosmos universe.] an {astronaut}; -- a term used by the Soviets and Russians. Syn: astronaut, spaceman. [PJC]
astronaut \as"tro*naut\ adj. a person trained to travel in a spacecraft; one who travels in a spacecraft; -- called in the Soviet Union and Russia {cosmonaut}. Syn: spaceman, cosmonaut [WordNet 1.5]