Word Study
space probe
CIDE DICTIONARY
space probe, n.
an unmanned rocket carrying instruments to explore objects or conditions in outer space; -- used mostly for vehicles travelling beyond the earth's gravitational field, rather than in orbital or suborbital flight. [PJC]
THESAURUS
space probe
ATDA, ATS, Alouette, Anna, Apollo, Ariel, Atlas-Score, Biosatellite, Comsat, Cosmos, Courier, Diapason, Discoverer, ERS, Early Bird, Echo, Elektron, Explorer, GATV, Gemini, Injun, Intelsat, Lofti, Luna, Lunar Orbiter, Lunik, Mariner, Mars probes, Mercury, Midas, Nimbus, OAO, OGO, OSO, Pageos, Pegasus, Pioneer, Proton, Ranger, Relay, Samos, San Marco, Secor, Sputnik, Surveyor, Syncom, Telstar, Transit, Vanguard, Viking, Voskhod, WRESAT, Zond, artificial satellite, artificial satellites, communications satellite, geo probe, geodetic satellite, geophysical satellite, navigational satellite, probe, research satellite, robot satellite, satellite, space satellite, spacecraft, sputnik, unmanned satellite, weather satelliteFor further exploring for "space probe" in Webster Dictionary Online