Skip to definition.
Get the FREE one-click dictionary software for Windows.


Noun: reductant
  1. 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
    - reducing agent, reducer

Derived forms: reductants

See also: reduce

Type of: chemical agent

Encyclopedia: Reductant