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Neptune
noun
- Rom. Myth. the god of the sea: identified with the Greek Poseidon
- the sea personified
- the fourth largest planet of the solar system and normally the eighth in distance from the sun: it has a thin, icy ring system around its equator: diameter, c. 49,530 km (c. 30,780 mi); period of revolution, 164.79 earth years; period of rotation, 16.11 hours; 13 satellites; symbol, ♆
Related Forms:
- Neptunian adjective
See Neptune in American Heritage Dictionary 4
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