re·​duc·​tase | \ri-ˈdək-ˌtās, -ˌtāz\

Definition of reductase 

: an enzyme that catalyzes reduction

Examples of reductase in a Sentence

Recent Examples on the Web

Research has found PSO can inhibit the enzyme known as 5-alpha reductase enzyme, which has been shown to slow and stop hair growth by producing DHT from testosterone. Alexandra Tunell, Harper's BAZAAR, "Why You Need Pumpkin Seed Oil In Your Skin Care This Fall," 15 Sep. 2014

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'reductase.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of reductase

1902, in the meaning defined above

Keep scrolling for more

Learn More about reductase

Statistics for reductase

Look-up Popularity

Time Traveler for reductase

The first known use of reductase was in 1902

See more words from the same year

Keep scrolling for more

More Definitions for reductase


re·​duc·​tase | \-ˌtās, -ˌtāz \

Medical Definition of reductase 

: an enzyme that catalyzes chemical reduction

More from Merriam-Webster on reductase

See words that rhyme with reductase

Comments on reductase

What made you want to look up reductase? Please tell us where you read or heard it (including the quote, if possible).


obstinately defiant of authority

Get Word of the Day daily email!

Test Your Vocabulary

Autumn Words of the Day 2018

  • a-top-down-image-of-road-through-an-autumn-forest
  • Which is a synonym of fugacious?
How Strong Is Your Vocabulary?

Test your vocabulary with our 10-question quiz!

Word Winder's CrossWinder

Test Your Knowledge - and learn some interesting things along the way.


Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!