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
source: WordNet 3.0
pipefitting that joins two pipes of different diameter
source: WordNet 3.0
One who, or that which, reduces.
source: Webster 1913
A contrivance for reducing the dimensions of one part so as to fit it to another, as a reducing coupling, or a device for holding a drilling a chuck.
