astronautics

• POS: Noun
• HYPHEN: as=tro=nau=tics

CIDE DICTIONARY

astronautics, n. 

 the theory and practice of navigation through the upper atmosphere or outer space; the science of travel in space.  [WordNet 1.5]

OXFORD DICTIONARY

astronautics, n. the science of space travel.

THESAURUS

astronautics

aeronautics, aerospace medicine, aerospace research, aerospace science, aerospace technology, air service, airline, aviation, ballooning, bioastronautics, blind flying, cloud-seeding, commercial aviation, contact flying, cruising, escape velocity, flight, flying, general aviation, gliding, grand tour, interplanetary travel, pilotage, rocketry, sailing, sailplaning, science fiction, soaring, space flight, space medicine, space travel, space walk, step flight, trip to Mars, winging

ROGET THESAURUS

astronautics

Navigation

N navigation, aquatics, boating, yachting, ship, oar, paddle, screw, sail, canvas, aileron, natation, swimming, fin, flipper, fish's tail, aerostation, aerostatics, aeronautics, balloonery, balloon, ballooning, aviation, airmanship, flying, flight, volitation, wing, pinion, rocketry, space travel, astronautics, orbital mechanics, orbiting, voyage, sail, cruise, passage, circumnavigation, periplus, headway, sternway, leeway, fairway, mariner, flight, trip, shuttle, run, airlift, sailing, volant, aerostatic, seafaring, nautical, maritime, naval, seagoing, coasting, afloat, navigable, aerial, aeronautic, grallatory, under way, under sail, under canvas, under steam, on the wing, in flight, in orbit, bon voyage, spread the thin oar and catch the driving gale.