markup

noun4

1. •
   The percentage or amount by which a seller hikes up their buy-in price when determining their selling price.

   • You don’t make much money selling gas because the markup is so low.
2. •
   An increase in price.

   • There will be a markup on those products next week; better buy them now.
3. •
   The notation that is used to indicate the meaning of the elements in an electronic document, or to dictate how text should be displayed.

   • For example, a filename of “home.html” would be appropriate for an ASCII/text file containing HTML markup. — 1996
4. •
   (US) The process by which proposed legislation is debated and amended.