As a Noun: 1. A fraction of an amount expressed as a particular number of hundredths of that amount. English = percentage. 2. A single unit of measurement when an amount is expressed as a percentage. English = per cent. 3. The symbol used to write percentages (%) which is read as 'per cent'. As Modifier: 1. Used immediately after numbers to mean the amount in question is expressed as a percentage. English = per cent.