The chemical symbol for chloride is Cl. It represents the element chlorine in its ionic form, which has a single negative charge (Cl-). Chloride is a vital electrolyte in the human body, playing a key role in maintaining fluid balance, regulating blood pressure, and aiding in digestion as part of hydrochloric acid in stomach secretions. It also participates in various biochemical processes, contributing to cellular signaling and overall health. Chloride is commonly found in table salt (sodium chloride), and it is essential in both physiological processes and industrial applications.