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Proteus(prō`tēəs, –tyo͞os), in astronomy, one of the natural satellites, or moons, of NeptuneNeptune,
in astronomy, 8th planet from the sun at a mean distance of about 2.8 billion mi (4.5 billion km) with an orbit lying between those of Uranus and the dwarf planet Pluto; its period of revolution is about 165 years.
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Proteus(prō`tēəs, –tyo͞os), in Greek mythology, prophetic old man of the sea who tended the seals of Poseidon. He could change himself into any shape he pleased, but if he were nevertheless seized and held, he would foretell the future. The word protean is derived from his name.
Proteus(proh -tee-ŭs, proh -tyooss) The second-largest known satellite of Neptune, measuring 400 km across but irregular in shape, discovered in 1989 during the Voyager 2 flyby. It orbits close to its planet, completing one circuit in about 26 hours at a mean distance of nearly 93 000 km. Its path is almost parallel with Neptune's equator. Proteus has a low albedo (about 0.06) and a large feature, the Southern Hemisphere Depression, which is 250 km in diameter and 10 km deep. There are also troughs, ridges, and several craters. See Table 2, backmatter.
A satellite of Neptune orbiting at a mean distance of 73,100 miles (117,600 kilometers) with a period of 26.9 hours, and with a diameter of about 250 miles (400 kilometers).
though engaged, steals his friend Valentine’s beloved, reveals his plot and effects his banishment. [Br. Drama: Shakespeare Two Gentlemen of Verona]
has ability to change shape. [Gk. Myth.: Kravitz, 201]