Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun reducer

2 senses of reducer

Sense 1
reducing agent, reducer, reductant -- (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)
       => chemical agent -- (an agent that produces chemical reactions)

Sense 2
reducer -- (pipefitting that joins two pipes of different diameter)
       => pipefitting, pipe fitting -- (fitting consisting of threaded pieces of pipe for joining pipes together)