Hydra.
A mythological serpent with many heads, slain by Hercules as one of his twelve labours.
Meaning & usage
A mythological serpent with many heads, slain by Hercules as one of his twelve labours.
A spring constellation of the northern sky, said to resemble a serpent. It lies just south of the zodiac and contains the star Alphard.
One of Pluto's moons.
One of the Saronic Islands in the Aegean Sea.
A commune in Algiers Province, Algeria.
Where this word comes from
From Latin Hydra, the mythical serpent, originally from Ancient Greek ὕδρα (húdra), from Proto-Indo-European *údreh₂ (“aquatic”). Doublet of otter.
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Definitions, grammatical labels, IPA, etymology and examples: Wiktionary contributors, extracted by Kaikki / Wiktextract. Adapted under CC BY-SA 4.0. Selected fields and authored examples are shown; third-party quotations and audio are omitted. See contributor history.
Last enriched 2026-09-10. Definitions are in English. Romanizations are shown when supplied by the source; syllable estimates are omitted for unsupported scripts.