Hydra

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noun Hy·dra \ˈhī-drə\

Definition of Hydra

  1. 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. 2 not capitalized :  a multifarious evil not to be overcome by a single effort

  3. 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. 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

Origin and Etymology of hydra

Middle English Ydra, from Latin Hydra, from Greek


First Known Use: 15th century


Hydra

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geographical name Hy·dra \ˈhī-drə\
variants: or Modern Greek

Ídhra

\ˈēth-rä\play

Definition of Hydra

  1. island of Greece in the southern Aegean Sea off the east coast of the Peloponnese area 20 square miles (52 square kilometers), population 2794

Hydriot

play \ˈhī-drē-ət, -drē-ˌät\ or

Hydriote

play \-ˌōt, -ət\ noun

Medical Dictionary

hydra

play
noun hy·dra \ˈhī-drə\

Medical Definition of hydra

  1. :  any of numerous small tubular freshwater hydrozoan polyps (Hydra and related genera) having at one end a mouth surrounded by tentacles


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