Hydra

Genus of freshwater coelenterates (Cnidaria). They are small, solitary and only exist in the polyp form, which is a radially-symmetrical cylinder that is attached to the substratum at one end and has a mouth surrounded by tentacles at the other. They have considerable powers of regeneration and have been used in studies on positional information in morphogenesis. ...

Hydra

[Chinese astronomy] The modern constellation Hydra lies across two of the quadrants, symbolized by the Azure Dragon of the East (東方青龍, Dōng Fāng Qīng Lóng) and the Vermilion Bird of the South (南方朱雀, Nán Fāng Zhū Què), that divide the sky in traditional Chinese uranography. The name of the western constellation in mod...
Found on http://en.wikipedia.org/wiki/Hydra_(Chinese_astronomy)

Hydra

a mythical being with nine serpent heads that when cut off were replaced by two more heads; this monster was destroyed by Herakles.
Found on http://www.hestories.info/greco-roman-world-glossary.html

hydra

[n] - (Greek mythology) monster with nine heads 2. [n] - a long faint constellation in the southern hemisphere near the equator stretching between Virgo and Cancer 3. [n] - small tubular solitary freshwater hydrozoan polyp
Found on http://www.webdictionary.co.uk/definition.php?query=hydra

Hydra

English name: The Water-Snake. Genitive name: Hydrae. Visibility: Visible from the UK See TABLE 20: THE CONSTELLATIONS.
Found on http://www.encyclo.co.uk/local/20448

Hydra

(In topic `Tools, Methods & Processes`) Hydra is a tool designed to provide companies with a Programme Management solution.  It is developed by Hydra Development Corporation, headquartered in the UK, which defines Programme Management as ‘the co-ordinated support, planning, prioritisation and monitoring of projects to meet changing busines...
Found on http://www.encyclo.co.uk/local/20477

Hydra

In Greek mythology, a huge monster with nine heads. If one were cut off, two would grow in its place. One of the 12 labours of Heracles was to kill it. ...
Found on http://www.encyclo.co.uk/local/20688

Hydra

Hy'dra noun ; plural English Hydras , Latin Hydræ . [ Latin hydra , Greek 'y`dra ; akin to 'y`dwr water. See Otter the animal, Water .] 1. (Class. Myth.) A serpent or monster in the lake or marsh of Lerna, in the Pelopo...
Found on http://www.encyclo.co.uk/webster/H/74

Hydra

<organism> Genus of freshwater coelenterates (cnidarians). They are small, solitary and only exist in the polyp form, which is a radially symmetrical cylinder that is attached to the substratum at one end and has a mouth surrounded by tentacles at the other. They have considerable powers of regeneration and have been used in studies on positi...
Found on http://www.encyclo.co.uk/local/20973

hydra

noun small tubular solitary freshwater hydrozoan polyp
Found on http://wordnetweb.princeton.edu/perl/webwn?s=hydra

Hydra

• (n.) Any small fresh-water hydroid of the genus Hydra, usually found attached to sticks, stones, etc., by a basal sucker. • (n.) A serpent or monster in the lake or marsh of Lerna, in the Peloponnesus, represented as having many heads, one of which, when cut off, was immediately succeeded by two others, unless the wound was cauterized. ...
Found on http://thinkexist.com/dictionary/meaning/hydra/

Hydra

island of the Saronic group in the Aegean Sea, Attica nomós (department), Greece. It lies just off the eastern tip of the Argolís peninsula of the ...
Found on http://www.britannica.com/eb/a-z/h/87

Hydra

in Greek legend, the offspring of Typhon and Echidna (according to the early Greek poet Hesiod`s Theogeny), a gigantic monster with nine heads (the ... [1 related articles]
Found on http://www.britannica.com/eb/a-z/h/87

Hydra

genus of invertebrate freshwater animals of the class Hydrozoa (phylum Cnidaria). The body of such an organism consists of a thin, usually ... [10 related articles]
Found on http://www.britannica.com/eb/a-z/h/87

Hydra

The Hydra was a Dutch mine layer of 593 tons displacement launched in 1911 and sunk in action with German aircraft in the Zuider Zee in May 1940 during the invasion of Holland during the Second World War. The Hydra was powered by coal fired engines providing a top speed of 12 knots and a range of 2304 km at 6 knots. She carried a complement of 53 a...
Found on http://www.probertencyclopaedia.com/browse/RH.HTM

Hydra

Hydra is a cultivated variety of potato.
Found on http://www.probertencyclopaedia.com/browse/QH.HTM

Hydra

[ship] The Hydra is a 22 person hydrogen ship, power-assisted by an electric motor that gets its electricity from a fuel cell. The debut was in June 2000 on the Rhine near Bonn, Germany. The idea for this project came from Christian Machens in 1999 for designing and building the fuel cell system for the Hydra in Leipzig. The ship has transp...
Found on http://en.wikipedia.org/wiki/Hydra_(ship)

Hydra

[operating system] HYDRA was an early capability-based, object-oriented, microkernel designed to support a wide range of possible operating systems to run on top of it. HYDRA was created as part of the C.mmp project at Carnegie-Mellon University in 1971. HYDRA was designed to be modular and secure, and intended to be flexible enough for eas...
Found on http://en.wikipedia.org/wiki/Hydra_(operating_system)

Hydra

(abbr. Hya, gen. Hydrae) The Water Serpent. Hydra is the largest constellation of all (following the dismantling of Argo Navis), stretching across a huge swathe of the southern sky. See below for details of the constellation's brightest stars and interesting deep sky objects. ...
Found on http://www.daviddarling.info/encyclopedia/H/Hya.html

Hydra

A genus of small, freshwater cnidarians (coelenterates) which belong to the class Hydrozoa. Hydra attach themselves to submerged rocks, leaves, and twigs, and stretch out their tentacles, or cnidae, to capture passing prey. Unlike most hydrozoa, which spend at least part of their lives in a free-swi...
Found on http://www.daviddarling.info/encyclopedia/H/Hydra.html

Hydra

Hydra, in astronomy, southern constellation lying S of Corvus, Crater, Virgo, Leo, and Cancer. It is a long, slender, winding constellation traditionally depicted as a snake and known also as the Water Monster or Sea Serpent. The only bright star in the constellation is Alphard (Alpha Hydrae); it is...
Found on http://www.infoplease.com/ce6/sci/A0824697.html

Hydra

Hydra, in Greek mythology, many-headed water serpent; offspring of Typhon and Echidna. When one of its heads was cut off, two new heads appeared. The second labor of Hercules was to kill the monster. He did so by burning the neck after cutting off each head.
Found on http://www.infoplease.com/ce6/ent/A0824698.html

Hydra

Hydra, Greece: see Ídhra.
Found on http://www.infoplease.com/ce6/world/A0914542.html

hydra

hydra (hī'dru) , common name for freshwater organisms in the phylum Cnidaria, which includes jellyfish, sea anemones, and corals. Hydras are widely distributed in lakes, ponds, and sluggish streams. They are small, cylindrical, solitary organisms, the largest reaching about 1 in. (2.5 cm) ...
Found on http://www.infoplease.com/ce6/sci/A0824696.html

Hydra

The hydra is of the order Hydrida.
Found on http://www.probertencyclopaedia.com/browse/BH.HTM
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