Hydra

From Latin Hydra, the mythical serpent.

Hydra f

1. A taxonomic genus within the family Hydridae – predatory freshwater cnidarians, thought not to age, the hydras.

• (genus): Eukaryota - superkingdom; Animalia - kingdom; Cnidaria - phylum; Medusozoa - subphylum; Hydrozoa - class; Hydroida - order; Hydrida - suborder; Hydridae - family

• (genus): Hydra magnipapillata, Hydra oligactis (brown hydra), Hydra viridissima (green hydra), Hydra vulgaris (freshwater hydra) - selected species; for other species see Hydra on Wikipedia.Wikipedia

• Protohydra

• Hydra (genus) on Wikipedia.Wikipedia
• Hydra on Wikispecies.Wikispecies
• Hydra (genus) on Wikimedia Commons.Wikimedia Commons
• Hydra at World Register of Marine Species

From Latin Hydra, the mythical serpent, originally from Ancient Greek ὕδρα (húdra), from Proto-Indo-European *údreh₂ (“aquatic”). Doublet of otter.

• (UK, US) IPA^(key): /ˈhaɪ̯dɹə/, [ˈhaɪ̯dɹə], [ˈhaɪ̯d͡ʒɹə]

Hydra

1. (Greek mythology) A mythological serpent with many heads, slain by Hercules as one of his twelve labours.
2. (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.
   • 2021, A. K. Blakemore, The Manningtree Witches, Granta Books, page 232:

     At night I lie dry-eyed on my little bed and turn my head to and fro to catch sight of one little star by one little star along the tail of Hydra, and think you are alive, you survive. Is this not what you wanted?

3. (astronomy) One of Pluto's moons.
4. One of the Saronic Islands in the Aegean Sea.
5. (geography) A commune in Algiers Province, Algeria.

• (mythology): Lernaean Hydra; Xiangliu, Xiangyao (Chinese equivalent)
• (astronomy, moon of Pluto): Pluto II, S/2005 P 1, S/2005 P 1 (Hydra), (134340) Pluto II, (134340) Pluto II Hydra, Pluto II (Hydra)

• hydra
• Hydrae
• Hydrian

• (moons of Pluto) Charon, Styx, Nix, Kerberos, Hydra

• Hardy, hardy

From hydra, from Ancient Greek ὕδρα (húdra).

• IPA^(key): [ˈɦɪdra]
• Rhymes: -ɪdra
• Hyphenation: Hyd‧ra

Hydra f

1. (Greek mythology, Roman mythology) Hydra, a mythological serpent with seven heads
   • 1996, Antonín Rükl, “Hydra”, in Souhvězdí, Praha: Aventinum, →ISBN, page 126:

     […] místo každé uťaté hlavy vyrostly Hydře dvě nové.

     […] instead of every cut-off head two new heads grew up to Hydra.

2. (astronomy) Hydra, a spring constellation of the northern sky
   • 1996, Antonín Rükl, “Hydra”, in Souhvězdí, Praha: Aventinum, →ISBN, page 126:

     Alfa Hydrae – Alphard, 2,0 mag, je nejjasnější hvězda v Hydře.

     Alpha Hydrae – Alphard, 2.0 mag, is the brightest star in the constellation of Hydra.

3. (astronomy) Hydra, a moon of Pluto [since 2006]
   • 2015 June 12, Petr Lála, “Historická událost: sonda New Horizons zblízka prozkoumá záhadné Pluto”, in Technet.cz‎:

     Měsíce Hydra, Nix a Styx obíhají ve vzájemné rezonanci, protože za jeden oběh Hydry oběhne Nix právě jeden a půlkrát a Styx dokonce dvakrát.

     The moons Hydra, Nix and Styx orbit in mutual resonance, as Nix makes exactly one and half an orbit and Styx even two orbits during one orbit of Hydra.

4. Hydra, one of the Saronic Islands of Greece in the Aegean Sea
   • 1904, “Řecko”, in Ottův slovník naučný‎, volume XXI, Praha: J. Ottl, page 359:

     Poloostrov Argolský, k němuž přiléhá ostrov Hydra (Hydrea), omezuje záliv Nauplijský […]

     The Argolid Penninsula, which the island of Hydra (Hydrea) closely borders with, closes the Argolic Gulf […]

• hydra (serpent)

• Hydra in Kartotéka Novočeského lexikálního archivu
• Hydra (mytologie) on the Czech Wikipedia.Wikipedia ^cs
• Hydra (souhvězdí) on the Czech Wikipedia.Wikipedia ^cs
• Hydra (měsíc) on the Czech Wikipedia.Wikipedia ^cs

• drahý
• dráhy
• hadry
• hrady

Learned borrowing from Ancient Greek ὕδρα (húdra).

• IPA^(key): /ˈhydrɑ/, [ˈhydrɑ̝]
• Rhymes: -ydrɑ
• Syllabification^(key): Hyd‧ra

Hydra

1. Hydra (mythological serpent)
2. (rare) Synonym of Vesikäärme (“constellation Hydra”).
3. (astronomy) Hydra (one of Pluto's moons)
4. Hydra (one of the Saronic Islands, its municipality and its central town)

From Latin hydra, from Ancient Greek ὕδρα (húdra).

• IPA^(key): /ˈhyːdʁa/

• Audio

  (file)

Hydra f

1. (Greek mythology) Hydra (mythical serpent)

From Ancient Greek ὕδρα (húdra).

• (Classical) IPA^(key): /ˈhy.dra/, [ˈhʏd̪rä]
• (modern Italianate Ecclesiastical) IPA^(key): /ˈi.dra/, [ˈiːd̪rä]

Hydra f sg (genitive Hydrae); first declension

1. (Greek mythology) The Hydra (mythical serpent)

First-declension noun, singular only.

• English: Hydra, hydra
• French: hydre
• German: Hydra
• Italian: idra
• Portuguese: hidra
• Spanish: hidra

• “Hydra”, in Charlton T. Lewis and Charles Short (1879) A Latin Dictionary, Oxford: Clarendon Press
• Hydra in Gaffiot, Félix (1934) Dictionnaire illustré latin-français, Hachette.

Learned borrowing from Latin Hydra.

• IPA^(key): /ˈxɨd.ra/

• Audio

  (file)

• Rhymes: -ɨdra
• Syllabification: Hyd‧ra
• Homophone: hydra

Hydra f

1. (Greek mythology) Hydra (mythological serpent with many heads, slain by Hercules as one of his twelve labours)
2. (astronomy) Hydra (spring constellation of the northern sky, said to resemble a serpent)

• Hydra in Polish dictionaries at PWN

• IPA^(key): /ˈidɾa/ [ˈi.ð̞ɾa]
• Rhymes: -idɾa
• Syllabification: Hy‧dra

Hydra f

1. (astronomy) Hydra (constellation)

Hydra

1. (astronomy) Hydra