Definition of "leukotriene" [leukotriene]

• Any of several lipid compounds that contain 20 carbon atoms, are related to prostaglandins, and mediate the inflammatory response. (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 second part of your question, yes, this class of drugs, known as leukotriene antagonist, there are the drugs on that list as well."
• "Now, a couple of things, first of all, Singulair is what's called a leukotriene antagonist."
• "Singulair is what is known as a leukotriene antagonist."