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

(298) the many-headed beast killed by Hercules.
Found on https://www.cliffsnotes.com/literature/o/othello/study-help/full-glossary

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

[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

• (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

<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

(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

(astronomy) In astronomy, the largest constellation, winding across more than a quarter of the sky between Cancer and Libra in the southern hemisphere. Hydra is named after the multi-headed sea serpent slain by Hercules. Despite its size, it is not prominent; its brightest star is seco...
Found on http://www.talktalk.co.uk/reference/encyclopaedia/hutchinson/m0010325.html

Hydra

(mythology) 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.talktalk.co.uk/reference/encyclopaedia/hutchinson/m0014397.html

hydra

(zoology) In zoology, any of a group of freshwater polyps, belonging among the coelenterates. The body is a double-layered tube (with six to ten hollow tentacles around the mouth), 1.25 cm/0.5 in long when extended, but capable of contracting to a small knob. Usually fixed to waterweed...
Found on http://www.talktalk.co.uk/reference/encyclopaedia/hutchinson/m0008327.html

Hydra

[chess] Hydra was a chess machine, designed by a team with Dr. Christian `Chrilly` Donninger, Dr. Ulf Lorenz, GM Christopher Lutz and Muhammad Nasir Ali. Since 2006 the development team consisted only of Donninger and Lutz. Hydra was under the patronage of the PAL Group and Sheikh Tahnoon Bin Zayed Al Nahyan of Abu Dhabi. The goal of the Hy...
Found on http://en.wikipedia.org/wiki/Hydra_(chess)

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

[constellation] Hydra is the largest of the 88 modern constellations, measuring 1303 square degrees. Also one of the longest at over 100 degrees, its southern end abuts Libra and Centaurus and its northern end borders Cancer.{sfn|Ridpath|Tirion|2001|pp=158–160} It has a long history, having been included among the 48 constellations listed...
Found on http://en.wikipedia.org/wiki/Hydra_(constellation)

Hydra

[moon] Hydra is the outermost known natural satellite of Pluto. It was discovered along with Nix in June 2005, and is to be visited along with Pluto by the New Horizons mission in July 2015. == Discovery == Hydra was found by the Hubble Space Telescope`s `Pluto Companion Search Team`, consisting of Hal A. Weaver, Alan Stern, Max J. Mutchler...
Found on http://en.wikipedia.org/wiki/Hydra_(moon)

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

[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

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

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

a many-headed, poisonous serpent slain by Herakles and his nephew Iolaus.
Found on http://www.chalquist.com/writings/greekmyth/

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

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

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

Greek Mythology/Real Life) - The Lernaean hydra was a many-headed, serpent-like beast killed by Heracles. Also a genus of tiny, predatory, fresh-water animals with regenerative abilities.
Found on https://www.tor.com/2012/08/13/sea-monsters-a-z/

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
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