ˌproper ˈfraction BrE AmE noun [countable]
a ↑ fraction such as ¾, in which the number above the line is smaller than the one below it ⇨ improper fraction
ˌproper ˈfraction BrE AmE noun [countable]
a ↑ fraction such as ¾, in which the number above the line is smaller than the one below it ⇨ improper fraction
Longman Dictionary of Contemporary English. Longman - Словарь современного английского языка. 2012