reducer Meaning, Definition & Usage

  1. noun 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; reductant.
  2. noun pipefitting that joins two pipes of different diameter

WordNet


Re*du"cer noun
Definitions
  1. One who, or that which, reduces.

Webster 1913