Also known as the reducing agent. This species gives up electrons to the oxidising agent. In this process, it itself is oxidised (loses electrons). The reductant is found within the anodic compartment of a galvanic cell. Contrast with: Oxidant

a substance capable of bringing about the reduction of another substance as it itself is oxidized; used in photography to lessen the density of a negative or print by oxidizing some of the slackened silver

Reducing agent, the electron donor in an oxidation-reduction (redox) reaction.