1. substances that cause reduction in chemical reactions by donating electrons or hydrogen atoms
Usage: chemistry; plural of reductant

Examples

• Common reductants include hydrogen gas and carbon monoxide.
• The laboratory stored various reductants in a controlled environment.
• Metal ores are processed using powerful reductants to extract pure metals.
• Students learned to identify reductants in redox equations.
• Industrial processes often require specific reductants for different reactions.
• The chemist compared the effectiveness of different reductants.