[usually singular]an increase in the price of something based on the difference between the cost of producing it and the price it is sold at（基于成本价与销售价之间差价的）加成
an average markup of 10 per cent平均加价10％
The markup on good in a restaurant is at least 100 per cent.餐馆的商品加价幅度至少为100％。
[uncountable](computing计算机)the symbols used in computer documents that give information about the structure of the document and tell the computer how it is to appear on the computer screen, or how it is to appear when printed置标，标记符号（标示计算机文档结构和显示、打印形式）