Sputnik is defined as one of the space satellites launched into Earth orbit by the Soviet Union starting in 1957.
An example of Sputnik is a device that orbits the earth and transmits information back to Earth.
[oftenS-] any of a series of man-made satellites put into orbit by the U.S.S.R. beginning in October, 1957
Origin of sputnikfrom Russ, literally , co-traveler from s(o)-, with + put', way + -nik, -nik
Any of a series of Soviet satellites sent into Earth orbit, especially the first, launched October 4, 1957.
Origin of SputnikRussian sputnik (zemli) fellow traveler (of Earth) so-, s- together ; see ksun in Indo-European roots. put' path, way ; see pent- in Indo-European roots. -nik n. suff
From Russian ÑÐ¿ÑƒÑ‚Ð½Ð¸Ðº (sputnik, “fellow traveller").