Definition of hydra

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Hydra (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. It was slain by Hercules. Hence, a terrible monster..

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Gelatine :: Gelatine (n.) Animal jelly; glutinous material obtained from animal tissues by prolonged boiling. Specifically (Physiol. Chem.), a nitrogeneous colloid, not existing as such in the animal body, but formed by the hydrating action of boiling water on the collagen of various kinds of connective tissue (as tendons, bones, ligaments, etc.). Its distinguishing character is that of dissolving in hot water, and forming a jelly on cooling. It is an important ingredient of calf's-foot jelly, isinglass, gl
Hydrated :: Hydrated (a.) Formed into a hydrate; combined with water.
Hydrina :: Hydrina (n. pl.) The group of hydroids to which the fresh-water hydras belong.
Dehydration :: Dehydration (n.) The act or process of freeing from water; also, the condition of a body from which the water has been removed..
Ethylate :: Ethylate (n.) A compound derived from ethyl alcohol by the replacement of the hydroxyl hydrogen, after the manner of a hydrate; an ethyl alcoholate; as, potassium ethylate, C2H5.O.K..
Bud :: Bud (n.) A small protuberance on certain low forms of animals and vegetables which develops into a new organism, either free or attached. See Hydra..
Sinistrin :: Sinistrin (n.) A mucilaginous carbohydrate, resembling achroodextrin, extracted from squill as a colorless amorphous substance; -- so called because it is levorotatory..
Chloral :: Chloral (n.) Chloral hydrate.
Zoochlorella :: Zoochlorella (n.) One of the small green granulelike bodies found in the interior of certain stentors, hydras, and other invertebrates..
Saccharate :: Saccharate (n.) In a wider sense, a compound of saccharose, or any similar carbohydrate, with such bases as the oxides of calcium, barium, or lead; a sucrate..
Mercury :: Mercury (n.) A metallic element mostly obtained by reduction from cinnabar, one of its ores. It is a heavy, opaque, glistening liquid (commonly called quicksilver), and is used in barometers, thermometers, ect. Specific gravity 13.6. Symbol Hg (Hydrargyrum). Atomic weight 199.8. Mercury has a molecule which consists of only one atom. It was named by the alchemists after the god Mercury, and designated by his symbol, /..
Polyacid :: Polyacid (a.) Capable of neutralizing, or of combining with, several molecules of a monobasic acid; having more than one hydrogen atom capable of being replaced by acid radicals; -- said of certain bases; as, calcium hydrate and glycerin are polyacid bases..
High-pressure :: High-pressure (a.) Having or involving a pressure greatly exceeding that of the atmosphere; -- said of steam, air, water, etc., and of steam, air, or hydraulic engines, water wheels, etc..
Water Cement :: Water cement () Hydraulic cement.
Gelose :: Gelose (n.) An amorphous, gummy carbohydrate, found in Gelidium, agar-agar, and other seaweeds..
Hydrastine :: Hydrastine (n.) An alkaloid, found in the rootstock of the golden seal (Hydrastis Canadensis), and extracted as a bitter, white, crystalline substance. It is used as a tonic and febrifuge..
Levulosan :: Levulosan (n.) An unfermentable carbohydrate obtained by gently heating levulose.
Hydrate :: Hydrate (v. t.) To form into a hydrate; to combine with water.
Hydrated :: Hydrated (imp. & p. p.) of Hydrat.
Hydra :: Hydra (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. It was slain by Hercules. Hence, a terrible monster..
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