a. [ Hydro-, 2 + chloric: cf. F. hydrochlorique. ] (Chem.) Pertaining to, or compounded of, chlorine and hydrogen gas; as, hydrochloric acid; chlorhydric. [ 1913 Webster ]
Hydrochloric acid (Chem.), hydrogen chloride; a colorless, corrosive gas, HCl, of pungent, suffocating odor. It is made in great quantities in the soda process, by the action of sulphuric acid on common salt. It has a great affinity for water, and the commercial article is a strong solution of the gas in water. It is a typical acid, and is an indispensable agent in commercial and general chemical work. Called also muriatic acid and chlorhydric acid. [ 1913 Webster ]
a. [ Nitro- + hydrochloric. ] (Chem.) Of, pertaining to, or containing, nitric and hydrochloric acids. [ 1913 Webster ]
Nitrohydrochloric acid, a mixture of nitric and hydrochloric acids, usually in the proportion of one part of the former to three of the latter, and remarkable for its solvent action on gold and platinum; -- called also aqua regia, and nitromuriatic acid. [ 1913 Webster ]
a. [ See Peptone, and Hydrochloric. ] (Physiol. Chem.) Designating a hypothetical acid (called peptohydrochloric acid, pepsinhydrochloric acid, and chloropeptic acid) which is supposed to be formed when pepsin and dilute (0.1-0.4 per cent) hydrochloric acid are mixed together. [ Archaic ] [ 1913 Webster ]
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