mark-up
noun [ C or U ]
(also markup) uk/ˈmɑːkʌp/ us COMMERCE
the amount by which the price of something is increased before it is sold again:
Most products sold in those stores are sold at a 5% markup.
Some states have laws forbidding the resale markup on tickets.
Compare
margin
IT
the symbols used in some types of computer documents that control the way text appears on a screen or page, or the process of adding these symbols:
XML markup has strict rules about what can go where.
Use the right tags in your mark-up or the page will not display correctly.
See also
mark sth up
retail mark-up