A reducing agent (also called a reductant or reducer) is an element or compound that loses (or `donates`) an electron to another chemical species in a redox chemical reaction. Since the reducing agent is losing electrons, it is said to have been oxidized. If any chemical is an electron donor (reducing agent), another must be an electron recipien.....
(from the article `chemical compound`) In this process, each sodium atom loses an electron and is thus oxidized, and each chlorine atom gains an electron and is thus reduced. In this ... ...The fact that the process A B + H+ cannot be observed does not imply any serious inadequacy of the definition. A similar situation exists with ... ...
The substance that reduces another substance and is oxidized.
The substance that reduces another substance and is oxidized.
A compound that causes reduction, thereby itself becoming oxidized.
A molecule that donates an electron in an oxidation-reduction reaction. ... (09 Oct 1997) ... 
a substance that acts as an electron donor in a chemical oxidation-reduction reaction.
Is a chemical in a developing solution which converts exposed silver halides to black metallic silver
A chemical which readily gives up the electrons and reduces more oxidised compounds; used to remove oxygen from anaerobic culture media.
An electron donor in a coupled oxidation-reduction reaction.
Is a chemical in a developing solution which converts exposed silver halides to black metallic silver. 
[n] - a substance capable of bringing about the reduction of another substance as it itself is oxidized
Either natural gas or coal can be used to remove the oxygen from iron ore in order to produce a scrap substitute. In gas-based processes, the iron ore is heated in a vessel as reformed natural gas passes through. In coal-based processes, iron ore is combined with gasified or ground coal and heated. The oxygen in the ore combines with carbon and hyd...
reducer noun 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