| hydroalcoholic extract | A solid extract obtained by extracting the soluble principles of the drug with alcohol and water, followed by evaporation of the solution. (05 Mar 2000) |
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| hydroalcoholic tincture | A tincture made with diluted alcohol in various proportions with water. (05 Mar 2000) |
| hydroappendix | Distention of the vermiform appendix with a serous fluid. (05 Mar 2000) |
| hydrobarometer | An instrument for determining the depth of the sea water by its pressure. Origin: Hydro-, 1 + barometer. Source: Websters Dictionary (01 Mar 1998) |
| hydrobilirubin | <physiology> A body formed from bilirubin, identical with urobilin. Origin: Hydro-, 2 + bilirubin. Source: Websters Dictionary (01 Mar 1998) |
| hydrobranchiata | <marine biology> An extensive artificial division of gastropod mollusks, including those that breathe by gills, as contrasted with the Pulmonifera. (19 Mar 1998) |
| hydrobromate | <chemistry> Same as Hydrobromide. Source: Websters Dictionary (01 Mar 1998) |
| hydrobromic | <chemistry> Composed of hydrogen and bromine; as, hydrobromic acid. <chemistry> Hydrobromic acid, a colourless, pungent, corrosive gas, HBr, usually collected as a solution in water. It resembles hydrochloric acid, but is weaker and less stable. Synonym: hydrogen bromide. Origin: Hydro-, 2 + bromic. Source: Websters Dictionary (01 Mar 1998) |
| hydrobromic acid | <chemical> Hydrobromic acid (hbr). A solution of hydrogen bromide gas in water. Chemical name: Hydrobromic acid (12 Dec 1998) |
| hydrobromide | <chemistry> A compound of hydrobromic acid with a base; distinguished from a bromide, in which only the bromine unites with the base. Source: Websters Dictionary (01 Mar 1998) |
| hydrocalycosis | A usually symptomless anomaly of the renal calix that is dilated from obstruction of the infundibulum; usually discovered incidentally at pyelography or autopsy; may become infected. Origin: hydro-+ G. Kalyx, cup of a flower (05 Mar 2000) |
| hydrocarbon | An organic molecule which consists only of carbon and hydrogen atoms, and no other elements. (09 Oct 1997) |
| hydrocarbonate | <chemistry> A hydrous carbonate, as malachite. Source: Websters Dictionary (01 Mar 1998) |
| hydrocarbons, acyclic | Organic compounds composed exclusively of carbon and hydrogen where no carbon atoms join to form a ring structure. (12 Dec 1998) |
| hydrocarbons, alicyclic | Organic compounds composed exclusively of carbon and hydrogen. Three or more carbon atoms are arranged in a cyclic structure and they possess aliphatic properties. (12 Dec 1998) |