hydra

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Hy·dra

 (hī′drə)
n.
1. Greek Mythology The many-headed monster that was slain by Hercules.
2. Astronomy A satellite of Pluto.
3. A constellation in the equatorial region of the southern sky near Cancer, Libra, and Centaurus. Also called Snake2.
4. A persistent or multifaceted problem that cannot be eradicated by a single effort.

[Middle English Idra, from Latin Hydra, from Greek Hudrā, Hydra, a water serpent; see wed- in Indo-European roots.]

hy·dra

 (hī′drə)
n. pl. hy·dras or hy·drae (-drē)
Any of several small solitary freshwater hydrozoans of the genus Hydra and related genera, having a cylindrical body and a mouth surrounded by tentacles.

[New Latin Hydra, genus name, from Latin Hydra, Hydra; see Hydra.]

hydra

(ˈhaɪdrə)
n, pl -dras or -drae (-driː)
1. (Animals) any solitary freshwater hydroid coelenterate of the genus Hydra, in which the body is a slender polyp with tentacles around the mouth
2. a persistent trouble or evil: the hydra of the Irish problem.
[C16: from Latin, from Greek hudra water serpent; compare otter]

Hydra

(ˈhaɪdrə)
n
(Classical Myth & Legend) Greek myth a monster with nine heads, each of which, when struck off, was replaced by two new ones

Hydra

(ˈhaɪdrə)
n, Latin genitive Hydrae (ˈhaɪdriː)
(Astronomy) a very long faint constellation lying mainly in the S hemisphere and extending from near Virgo to Cancer

hy•dra

(ˈhaɪ drə)

n., pl. -dras, -drae (-dri) for 1–3, gen. -drae (-dri) for 4.
1. (often cap.) a water monster of Greek myth having nine heads, each of which, if cut off, grew back as two.
2. any freshwater polyp of the family Hydridae, having a cylindrical body with a ring of tentacles surrounding the mouth.
3. a persistent or complex problem that presents new obstacles even as existing ones are overcome.
4. (cap.) the Sea Serpent, a southern constellation extending through 90° of the sky.
[1325–75; Middle English ydre < Middle French < Latin < Greek hýdrā water serpent; compare otter]

hy·dra

(hī′drə)
Any of several small freshwater polyps having a simple cylindrical body with a mouth-like opening surrounded by tentacles. The young develop from eggs or from buds.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.hydra - (Greek mythology) monster with nine headsHydra - (Greek mythology) monster with nine heads; when struck off each head was replaced by two new ones; "Hydra was slain by Hercules"
Greek mythology - the mythology of the ancient Greeks
mythical creature, mythical monster - a monster renowned in folklore and myth
2.Hydra - a long faint constellation in the southern hemisphere near the equator stretching between Virgo and Cancer
3.hydra - trouble that cannot be overcome by a single effort because of its many aspects or its persistent and pervasive quality; "we may be facing a hydra that defies any easy solution"
trouble, problem - a source of difficulty; "one trouble after another delayed the job"; "what's the problem?"
4.hydra - small tubular solitary freshwater hydrozoan polyp
hydroid, hydrozoan - colonial coelenterates having the polyp phase dominant
genus Hydra - hydras
Translations
Wasserschlange
Hydrahydre

hydra

[ˈhaɪdrə] N (hydras or hydrae (pl)) [ˈhaɪdriː]hidra f
Hydra (Myth) → Hidra f

hydra

n (Zool, Myth) → Hydra f