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re·duc·ing agent(rĭ-do͞o′sĭng, -dyo͞o′-)
A substance that chemically reduces other substances, especially by donating one or more electrons.
(Chemistry) chem a substance that reduces another substance in a chemical reaction, being itself oxidized in the process. Compare oxidizing agent
a substance that causes another substance to undergo reduction and that is oxidized in the process.
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|Noun||1.||reducing agent - 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 loose silver|
chemical agent - an agent that produces chemical reactions
hydrazine - a colorless fuming corrosive liquid; a powerful reducing agent; used chiefly in rocket fuels