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Definition from Dictionary, a free dictionary
Happiness lies in the joy of achievement and the thrill of creative effort.Franklin D. Roosevelt
- (zoology): A zoological name at the rank of genus in the family Hydridae. The hydras belong to the genus Hydra.
- (Greek mythology) A mythological serpent with seven heads, slain by Hercules as one of his twelve labours. Also called the Lernaean Hydra.
- (astronomy) A spring constellation of the northern sky, said to resemble a serpent. It lies just south of the zodiac and contains the star Alphard.
- (astronomy) The name of one of Pluto's moons. (Named 21 June 2006).
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