astronaut

• POS: Noun
• HYPHEN: as=tro=naut

CIDE DICTIONARY

astronaut, adj. 

 a person trained to travel in a spacecraft; one who travels in a spacecraft; -- called in the Soviet Union and Russia cosmonaut.  [WordNet 1.5]

OXFORD DICTIONARY

astronaut, n. a person who is trained to travel in a spacecraft.

Derivative

astronautical adj.

Etymology

ASTRO-, after aeronaut

THESAURUS

astronaut

Martian, adventurer, aeronaut, aeroplaner, aeroplanist, air pilot, airplanist, alien, alpinist, aviator, barnstormer, birdman, camper, captain, climber, cloud seeder, comers and goers, commercial pilot, commuter, copilot, cosmonaut, cosmopolite, crop-duster, cruiser, excursionist, explorer, fare, flier, globe-girdler, globe-trotter, goer, hajji, instructor, jet jockey, jet set, jet-setter, journeyer, licensed pilot, man from Mars, mariner, mountaineer, palmer, passenger, passerby, pathfinder, pilgrim, pilot, pioneer, planetary colony, rainmaker, rocket man, rocketeer, rubberneck, rubbernecker, sailor, sightseer, space crew, space traveler, spaceman, straphanger, stunt flier, stunt man, test pilot, tourer, tourist, trailblazer, trailbreaker, transient, traveler, trekker, tripper, viator, visiting fireman, voortrekker, voyager, voyageur, wayfarer, wingman, world-traveler

ROGET THESAURUS

astronaut

Mariner

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.