reducer

noun (n)

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 (noun.substance)

   Sinonim: reducing agent, reductant

   Sumber: wordnet30

2. pipefitting that joins two pipes of different diameter (noun.artifact)

   Sumber: wordnet30

3. One who, or that which, reduces. (noun)

   Sumber: webster1913

4. 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. (noun)

   Sumber: webster1913