Hydra
nounDefinition of Hydra
(Entry 1 of 2)
1
: a many-headed serpent or monster in Greek mythology that was slain by Hercules and each head of which when cut off was replaced by two others
2
not capitalized
: a multifarious evil not to be overcome by a single effort
3
[ Latin (genitive. Hydrae), from Greek ]
: a southern constellation of great length that lies south of Cancer, Sextans, Corvus, and Virgo and is represented on old maps by a serpent
4
not capitalized
[ New Latin, from Latin, Hydra ]
: any of numerous small tubular freshwater hydrozoan polyps (Hydra and related genera) having at one end a mouth surrounded by tentacles
Hydra
geographical nameDefinition of Hydra (Entry 2 of 2)
island of Greece in the southern Aegean Sea off the east coast of the Peloponnese area 20 square miles (52 square kilometers), population 2794
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