Ma'anar ƙamus na kalmar "babban jimla" ita ce jimlar ƙarshe ta jerin lambobi ko ƙididdiga, waɗanda aka samo ta hanyar haɗa su gaba ɗaya. Yana wakiltar cikakke kuma cikakke jimlar duk abubuwan haɗin kai a cikin saitin bayanai. A takaice dai, shine jimillar adadin da aka samu sakamakon kari na dukkan sassa daban-daban ko guda daya. Ana amfani da kalmar "babban jimlar" sau da yawa a cikin lissafin kuɗi, kuɗi, da sauran fannoni masu ƙididdigewa don wakiltar ƙarshe ko jimlar jimlar adadin ko ƙima.