"Numerus clausus" ni ijambo ryo mu Lugolande risobanura "umubare ufunze." Rikoreshwa mu buryo bwo kugena imipaka ku mubare w'abantu bemerewe kugira amahirwe runaka, nko kwinjira mu kigero cya kaminuza, umwuga runaka, cyangwa mu mashuri amwe n'amwe.
Mu konteksti y'uburezi, urugero, numerus clausus rushobora gushyirwaho kugira ngo hashingirwe ku mubare w'abanyeshuri bemerewe kwinjira mu gahunda zimwe z'amasomo, akenshi hashingiwe ku byangombwa cyangwa amanota y'ibizamini. Ubu buryo bukorwa hagamijwe gucunga ibyifuzo no gufasha mu kugumana ibisabwa mu rwego rwa gahunda.
Iri jambo kandi ryakoreshejwe mu mateka mu bijyanye no kwimura cyangwa ubwenegihugu, aho ryashoboraga gusobanura imipaka ku mubare w'abantu baturuka mu matsinda amwe n'amwe bemerewe kwinjira cyangwa kubana mu gihugu.