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a colorless or faintly yellow, corrosive, fuming liquid, HCl, used chiefly in chemical and industrial processes.
the colourless or slightly yellow aqueous solution of hydrogen chloride: a strong acid used in many industrial and laboratory processes Formerly called muriatic acid

hydrochloric acid hy·dro·chlo·ric acid (hī’drə-klôr’ĭk)
A clear, colorless, fuming, poisonous, highly acidic aqueous solution of hydrogen chloride, normally present in a dilute form in gastric juice, and used in a variety of laboratory processes.
hydrochloric acid
A solution of hydrogen chloride in water, forming a very strong, poisonous, corrosive acid with a sharp odor. It is used in food processing, metal cleaning, and dyeing. Small amounts of hydrochloric acid are also secreted by the stomachs of animals for digestion. Also called muriatic acid.


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  • Hydrochloric

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  • Hydrochloride

    [hahy-druh-klawr-ahyd, -id, -klohr-] /ˌhaɪ drəˈklɔr aɪd, -ɪd, -ˈkloʊr-/ noun 1. a salt, especially of an alkaloid, formed by the direct union of hydrochloric acid with an organic base that makes the organic constituent more soluble. /ˌhaɪdrəˈklɔːraɪd/ noun 1. a quaternary salt formed by the addition of hydrochloric acid to an organic base, such as aniline […]

  • Hydrochlorothiazide

    [hahy-druh-klawr-uh-thahy-uh-zahyd, -klohr-] /ˌhaɪ drəˌklɔr əˈθaɪ əˌzaɪd, -ˈkloʊr-/ noun, Pharmacology. 1. a crystalline, water-insoluble powder, C 7 H 8 ClN 3 O 4 S 2 , used as a diuretic and in the treatment of hypertension.

  • Hydrocholecystis

    hydrocholecystis hy·dro·cho·le·cys·tis (hī’drō-kō’lĭ-sĭs’tĭs) n. The effusion of serous fluid into the gallbladder.

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