Definitions

from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun The god of the waters, earthquakes, and horses, and brother of Zeus.

from The Century Dictionary.

  • noun In Greek myth, one of the chief Olympians, brother of Zeus, and supreme lord of the sea, sometimes looked upon as a benignant promoter of calm and prosperous navigation, but more often as a terrible god of storm.
  • noun In zoology: A genus of worms.
  • noun A genus of hemipterous insects of the family Scutelleridæ.
  • noun A genus of crustaceans.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • proper noun Greek mythology The god of the sea and other waters, earthquakes and horses.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • noun (Greek mythology) the god of the sea and earthquakes in ancient mythology; brother of Zeus and Hades and Hera; identified with Roman Neptune

Etymologies

from Wiktionary, Creative Commons Attribution/Share-Alike License

From Ancient Greek Ποσειδῶν (Poseidōn).

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