cosmonaut(n = noun.person) astronaut, spaceman - a person trained to travel in a spacecraft; "the Russians called their astronauts cosmonauts"
is a kind of traveler, traveller
has particulars: spacewalker, armstrong, neil armstrong, gagarin, yuri alekseyevich gagarin, yuri gagarin, glenn, john glenn, john herschel glenn jr., alan bartlett shepard jr., alan shepard, shepard, tereshkova, valentina tereshkova, valentina vladmirovna tereshkova

   an astronaut; -- a term used by the Soviets and Russians. [PJC]

cosmonaut, n. a Soviet astronaut.

Etymology:
Russ. kosmonavt, as COSMOS(1), after astronaut

N  sailor, mariner, navigator, seaman, seafarer, seafaring man, dock walloper, tar, jack tar, salt, able seaman, A, B, man-of-war's man, bluejacket, galiongee, galionji, marine, jolly, midshipman, middy, skipper, shipman, boatman, ferryman, waterman, lighterman, bargeman, longshoreman, bargee, gondolier, oar, oarsman, rower, boatswain, cockswain, coxswain, steersman, pilot, crew, aerial navigator, aeronaut, balloonist, Icarus, aeroplanist, airman, aviator, birdman, man-bird, wizard of the air, aviatrix, flier, pilot, test pilot, glider pilot, bush pilot, navigator, flight attendant, steward, stewardess, crew, astronaut, cosmonaut, parachutist, paratrooper.