Hydra
Definitions
- 1.Hydra, a mythological serpent with seven heads
[…] místo každé uťaté hlavy vyrostly Hydře dvě nové.
[…] instead of every cut-off head two new heads grew up to Hydra.
- 2.Hydra, a spring constellation of the northern sky
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.Hydra, a moon of Pluto
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
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 […]
Synonyms & related words
Etymology
From hydra, from Ancient Greek ὕδρα (húdra).
Forms
- hydraalternative
| Case | Singular | Plural |
|---|---|---|
| Nominative | Hydra | — |
| Genitive | Hydry | — |
| Dative | Hydře | — |
| Accusative | Hydru | — |
| Vocative | Hydro | — |
| Locative | Hydře | — |
| Instrumental | Hydrou | — |