Noun: reducer ri'd(y)oo-su(r)
- A substance capable of bringing about the reduction of another substance as it itself is oxidized
"The photographer used a reducer to adjust the contrast of the overexposed print";
- reducing agent, reductant
- Pipefitting that joins two pipes of different diameter
"The plumber used a reducer to connect the larger main pipe to the smaller branch line"
Derived forms: reducers
Type of: chemical agent, pipe fitting, pipefitting
Encyclopedia: Reducer