Definition of "markdown" [markdown]

• A reduction in price. (noun)
• The amount by which a price is reduced. (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.

• "If you are selling, the firm can buy from you for less than it could resell the security for; that vigorish is called a markdown."
• "Saks Inc., attempting to move beyond a so-called markdown-allowances scandal, confirmed it has settled two lawsuits that alleged the luxury retailer engaged in abusive practices against vendors."
• "Slidedown is a gem for writing presentations in a variant of markdown - in other words, in text, styled with CSS."