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Hydr-   Listen
prefix
Hydr-, Hydro-  pref.  
1.
A combining form from Gr., meaning water (see Hydra).
2.
(Chem.) A combining form of hydrogen, indicating hydrogen as an ingredient, as hydrochloric; or a reduction product obtained by hydrogen, as hydroquinone.






Collaborative International Dictionary of English 0.48








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"Hydr-" Quotes from Famous Books



... carbide in this country is the electric furnace. Cheap electrical energy from hydro-electric developments, such as the Niagara plants, have done much to make the earth yield its elements. Aluminum is very prevalent in the soil of the earth's surface, because its oxide, alumina, is ...
— Artificial Light - Its Influence upon Civilization • M. Luckiesh

... fulfil one or two of these conditions, but it is rare to find all combined in one, as in "Power." Power is pleasant to the taste—nutritious and most sustaining. It contains everything necessary for supporting the human frame. It combines proteid elements for building up the muscles; hydro-carbons and carbo-hydrates for heating the body and suppyling the requisite energy for work; mineral matters for bone and teeth; and lastly, a certain amount of "filling" material to occupy the stomach and bowels, cause daily laxation, and so carry away the bile and various other digestive juices, ...
— The Allinson Vegetarian Cookery Book • Thomas R. Allinson

... engineering: general mechanical engineering; steam engineering; railway mechanical engineering; hydro-mechanical engineering; machine design and construction; heating, ventilating, and refrigerating; industrial ...
— College Teaching - Studies in Methods of Teaching in the College • Paul Klapper

... deposition in the Comstock, and this the writer is not disposed to deny; but, on the other hand, it is plain that most of the phenomena are sufficiently accounted for on the supposition that the agents have been merely solutions of carbonic and hydro-sulphuric acids. These reagents will attack the bisilicates and felspars. The result would be carbonates and sulphides of metals, earth, alkalies, and free quartz, but quartz and sulphides of the metals are soluble in solutions of carbonates and sulphides of the earths and alkalies, ...
— Getting Gold • J. C. F. Johnson

... In addition to variations in the tests, due to changes in construction in the combustion chamber, there will be variations in the fuels tested. Especial effort will be made to procure fuels ranging in volatile content from 15 to 27 and to 40%, and those high in tar and heavy hydro-carbons. It is also proposed to vary the conditions of testing by burning at high rates, such as at 15, 20, and 30 lb. per ft. of grate surface, and even higher. Records will be kept of the weight of coal fired and of each firing, of the ...
— Transactions of the American Society of Civil Engineers, vol. LXX, Dec. 1910 • Herbert M. Wilson

... "Hydro-aeroplane," announced Commander McClure as he stood in the conning tower observing the wounded airship. The other planes were engaged over the remainder of the allied fleet and the Dewey was free to take care of the craft in front ...
— The Brighton Boys with the Submarine Fleet • James R. Driscoll



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