| a colorless or faintly yellow, corrosive, fuming liquid, HCl, used chiefly in chemical and industrial processes. |

hydrochloric acid hy·dro·chlo·ric acid (hī'drə-klôr'ĭk)
n.
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.