ಅರ್ಥ : 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.
ಸಮಾನಾರ್ಥಕ : reducing agent, reductant
ಅರ್ಥ : Pipefitting that joins two pipes of different diameter.