reducer
nounUK /rɪˈdjuːsə/
US /rɪˈduːsər/
A reducer is a thing that makes something smaller or less.
The plumber used a reducer to connect the big pipe to the small one.
RELATED WORDS
OTHER MEANINGS
2. A chemical added to a reaction to remove oxygen or add electrons.
The chemist added a reducer to the mixture.
3. A fitting that joins two pipes of different sizes.
He screwed the reducer onto the wider pipe.
4. A person or device that lowers speed or pressure.
The gear reducer slowed the motor down.
5. In computing, a function that combines values into one result.
The reducer summed all the numbers in the list.