1. the amount added to the cost to determine the asking price
2. detailed stylistic instructions for typesetting something that is to be printed; manual markup is usually written on the copy (e.g. underlining words that are to be set in italics)
Sentences with markup as a noun:
- You don’t make much money selling gas because the markup is so low.
- There will be a markup on those products next week; better buy them now.