Definition of "testosterone" []

• A white crystalline steroid hormone, C19H28O2, produced primarily in the testes and responsible for the development and maintenance of male secondary sex characteristics. It is also produced synthetically for use in medical treatment. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "The carbon isotope ratio test tells you whether the source of the testosterone is the body — a natural source — or pharmaceuticals."
• "Joe Lockhart, former White House spokesman for Bill Clinton and now a Kerry adviser, says, If you want the easiest way to define the Bush doctrine, it's what I call the testosterone presidency."
• "Good/bad, male/female, and because of the solicit is suggesting once again "testosterone", I'm thinking the obvious choice gender wise, is the complete opposite which is the "estrogen.""