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satellite (n.)

1540s, "follower or attendant of a superior person," from French satellite (14c.), from Latin satellitem (nominative satelles)  "an attendant" upon a distinguished person; "a body-guard, a courtier; an assistant," in Cicero often in a bad sense, "an accomplice, accessory" in a crime, etc. A word of unknown origin. Perhaps from Etruscan satnal (Klein), or a compound of roots *satro- "full, enough" + *leit- "to go" (Tucker); compare English follow, which is constructed of similar roots. De Vaan has nothing on it.

Meaning "planet that revolves about a larger one" first attested 1660s, in reference to the moons of Jupiter, from Latin satellites, which was used in this sense 1610s by German astronomer Johannes Kepler (1571-1630). Galileo, who had discovered them, called them Sidera Medicæa in honor of the Medici family. Meaning "man-made machinery orbiting the Earth" first recorded 1936 as theory, 1957 as fact. Meaning "country dependent and subservient to another" is recorded from 1800.

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Definitions of satellite from WordNet
1
satellite (n.)
man-made equipment that orbits around the earth or the moon;
Synonyms: artificial satellite / orbiter
satellite (n.)
a person who follows or serves another;
Synonyms: planet
satellite (n.)
any celestial body orbiting around a planet or star;
2
satellite (v.)
broadcast or disseminate via satellite;
3
satellite (adj.)
surrounding and dominated by a central authority or power;
a city and its satellite communities
From wordnet.princeton.edu