Webster's Revised Unabridged Dictionary · 1913

Peptohydrochloric

Peptohydrochloric , adjective

[See Peptone, and Hydrochloric.]

(Physiology Chemistry) 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]