Pep·to·hy·dro·chlo·ric a. 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]
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