noun \ˈhī-drə\

Definition of HYDRA

:  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
not capitalized :  a multifarious evil not to be overcome by a single effort
[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
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 of HYDRA

Middle English Ydra, from Latin Hydra, from Greek
First Known Use: 15th century


geographical name \ˈhī-drə\

Definition of HYDRA

island Greece in S Aegean Sea off E coast of Peloponnese area 20 square miles (52 square kilometers), pop 2794
Hy·dri·ot \ˈhī-drē-ət, -drē-ˌät\ or Hy·dri·ote \-ˌōt, -ət\ noun

Variants of HYDRA

Hy·dra or ModGk Ídhra \ˈēth-rä\


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