aro·​ma·​tase | \ ə-ˈrō-mə-ˌtās How to pronounce aromatase (audio) , -ˌtāz \

Definition of aromatase

: an enzyme or complex of enzymes that promotes the conversion of an androgen into estrogen

Examples of aromatase in a Sentence

Recent Examples on the Web And all naturally occurring estrogen in humans was once testosterone, transformed into estrogen by the enzyme aromatase. Grace Huckins, Scientific American, 1 Feb. 2021 All participants were given standard hormone therapy (an aromatase inhibitor or tamoxifen) as well as a medication that shuts down the ovaries' production of estrogen. Samantha Lauriello,, 4 June 2019 All of the women were given standard hormonal therapy -- an aromatase inhibitor or tamoxifen -- plus a medication that shuts down the ovaries' production of estrogen. Amy Norton, CBS News, 3 June 2019 But the effect that’s best understood is fat tissue’s ability to convert circulating steroids into estrogen via the enzyme aromatase, Dr. Jensen explains. Sarah Jacoby, SELF, 26 June 2018 According to the World Anti-Doping Agency, letrozole is an aromatase inhibitor that can act as a hormonal and metabolic stimulant by increasing testosterone concentration. Bianca Britton, CNN, 12 June 2018 This happened, the group theorized, because AMH damped down levels of aromatase, an enzyme in the placenta that usually converts testosterone to a form of estrogen. Jennifer Couzin-frankel, Science | AAAS, 14 May 2018 Even after anti-estrogen treatments, known as aromatase inhibitors, were introduced as part of the regimen in recent decades, they were simply added on to chemotherapy. Alice Park, Time, 7 June 2018 With aromatase activity curtailed, extra testosterone snuck through and bathed the mouse fetuses in a PCOS-conducive environment. Jennifer Couzin-frankel, Science | AAAS, 14 May 2018

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

See More

First Known Use of aromatase

1959, in the meaning defined above

History and Etymology for aromatase

aromat(ize) + -ase

Keep scrolling for more

Learn More About aromatase

Time Traveler for aromatase

Time Traveler

The first known use of aromatase was in 1959

See more words from the same year

Dictionary Entries Near aromatase




See More Nearby Entries 

Statistics for aromatase

Cite this Entry

“Aromatase.” Dictionary, Merriam-Webster, Accessed 24 Sep. 2021.

Style: MLA
MLACheck Mark Icon ChicagoCheck Mark Icon APACheck Mark Icon Merriam-WebsterCheck Mark Icon

Keep scrolling for more

More Definitions for aromatase


aro·​ma·​tase | \ ə-ˈrō-mə-ˌtās, -ˌtāz How to pronounce aromatase (audio) \

Medical Definition of aromatase

: an enzyme or complex of enzymes that promotes the conversion of an androgen (as testosterone) into estrogens (as estradiol)


Test Your Vocabulary

Dog Words Quiz

  • shiba puppy more or less demanding cuddles
  • Which of the following animals has a dog in its etymology?
How Strong Is Your Vocabulary?

Test your vocabulary with our 10-question quiz!


Anagram puzzles meet word search.

Love words? Need even more definitions?

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