reducer

[ ri-doo-ser, -dyoo- ]

noun

1. a person or thing that reduces.
2. Photography.
   1. an oxidizing solution for lessening the density of an exposed negative.
   2. a developing agent.
3. (in plumbing) a coupling decreasing in diameter at one end. Compare increaser ( def 2 ).

reducer

/ rɪˈdjuːsə /

noun

1. photog a chemical solution used to lessen the density of a negative or print by oxidizing some of the blackened silver to soluble silver compounds Compare intensifier
2. a pipe fitting connecting two pipes of different diameters
3. a person or thing that reduces

Other Words From

• anti·re·ducer noun

Word History and Origins

Origin of reducer¹

First recorded in 1520–30; reduce + -er ¹

Example Sentences

The plant contains dozens of bioactive chemical compounds and is used throughout Southeast Asia and China as a painkiller, fever reducer, and diuretic.

From Science Magazine

Acetaminophen is considered the safest over-the-counter pain reliever and fever reducer available during pregnancy.

From Science Daily

But it doesn’t have to be especially so if you — and the stressed-out loved ones in your orbit — have an arsenal of stress relievers, anxiety reducers and mood lifters at the ready.

From Los Angeles Times

The only medication he took was an acid reducer for his heartburn.

From New York Times

If you need to use a fever reducer, you can try a Food and Drug Administration-approved generic version.

From Seattle Times