- Biochemistry. the sex hormone, C19H28O2, secreted by the testes, that stimulates the development of male sex organs, secondary sexual traits, and sperm.
- Pharmacology. a commercially prepared form of this compound, originally isolated from bull's testes and now also produced synthetically, used in medicine chiefly for treatment of testosterone deficiency and for certain gynecological conditions.
Origin of testosterone
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for testosterone
The hormonal fuel for both impulses is the same: testosterone.Why These Marines Love ‘Frozen’—and Why It Matters
Aaron B. O’Connell
June 27, 2014
First words, then shoves, were exchanged, and finally, testosterone thick in the air, a few blows were thrown.Ben Carson Was a Role Model for Black Teens Until He Sold Out to the Right
March 16, 2014
The man, a walking cloud of testosterone, says this with utmost sincerity.This Arm Wrestling Reality Show Will Make You Beg for Mercy
February 25, 2014
The logic of letting people get back to their natural level of testosterone,” Yesalis suggests, “makes common medical sense.Reconsidering the War on Steroids
September 21, 2013
Research has shown that an increase in testosterone production occurs within people and animals at the start of competition.What in My Brain Makes Me So Loyal to My Hopeless Sports Team?
June 17, 2013
"We've managed to get some testosterone from a blond homunculus," he reported.The Sky Is Falling
Lester del Rey
- a potent steroid hormone secreted mainly by the testes. It can be extracted from the testes of animals or synthesized and used to treat androgen deficiency or promote anabolism. Formula: C 19 H 28 O 2
C20: from testis + sterol + -one
Word Origin and History for testosterone
Online Etymology Dictionary, © 2010 Douglas Harper
- A steroid hormone and the most potent naturally occurring androgen that is formed by the interstitial cells of the testes, and possibly by the ovary and adrenal cortex, may be produced in nonglandular tissues from precursors such as androstenedione, and is used in the treatment of hypogonadism, cryptorchism, carcinomas, and menorrhagia.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
- A steroid hormone that is the most potent naturally occurring androgen and that regulates the development of the male reproductive system and male secondary sex characteristics. Testosterone is produced mainly in the testes and is also used as a drug in the treatment of certain medical disorders. Chemical formula: C19H28O2.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
The New Dictionary of Cultural Literacy, Third Edition Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.