wa'ter. 1

A transparent, colorle liquid, H2O, devoid of odor or taste and neutral in reaction. 2. In pharmacy, a solution of a gas, a solid, or a liquid in w. 3. A familiar term for urine, acratothermal w's. Weak mineral w's. aerated w. W. containing air or other gas in solution, black w. A disease of cattle; also black w. fever, carbonated w., carbonic acid w. W. containing carbonic acid in solution, chalybeate w's. W's holding salts of iron in solution. chlorin w. A saturated aqueous solution of chlorin. chloroform a ted w. A saturated aqueous solution of chloroform. cologne w. See spiritus odorattts, under spiritus^ distilled w. W. freed from its impurities by distillation, eye w. See collyrium. ferruginous w's. See chalybeate w's. hard w. W. containing in solution salts of calcium or magnesium. Such w. requires more soap than ordinary w. to make a lather, because the fatty acid of the soap forms an insoluble compound with calcium and magnesium, and the salts of these metals must first be decomposed before a permanent lather is formed, ice w. W. obtained wholly or in part from the melting of ice or made cold by the addition of ice. mineral w's. W's having a special effect upon the system in virtue of salts or similar substances contained in them to such an amount as to give them a characteristic taste, natural w. W. as it occurs in nature, oxygenated w., oxygenized w. See hydrogen peroxid, under hydrogen, sea w. The salt w. of the ocean and the great seas communicating with it. soft w. W. which readily forms a lather with soap, spring w. W. derived from springs. It is often prescribed in medicines, subsoil w. A sheet of w. found below the surface of the soil, at depths that vary with the character and situation of the ground, w-borne. Propagated by polluted drinking water; said of the intestinal diseases such as typhoid fever and dysentery, w. brash. See pyrosis, w. closet. A closet containing a stool for defecation, w. cure. See hydrotherapy, w. of crystallization. W. which is a ociated with another substance in a state of molecular combination and in definite proportions, and is e ential to the preservation of the crystalline form of that substance, w. on the brain. See hydrocephalus, w. rigor. The death rigor caused by immersion in water. [Ang.-Sax., waeter.J