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Webster's New World College Dictionary » Neptunian
Neptunian
Variant of Neptune
Neptune
definition
Nep·tune (nep′to̵̅o̅n′, -tyo̵̅o̅n′)
noun
- Rom. Myth. the god of the sea: identified with the Greek Poseidon
- the sea personified
Etymology: ModL
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, ♆
Etymology: ME < L Neptunus, prob. < IE *nebhtus < base *nebh-, moist > nebula
Related Forms:
- Neptunian Nep·tu′·nian (-ē ən) adjective
Webster's New World College Dictionary Copyright © 2009 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.
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