Ma'anar "molal" sifa ce da ke bayyana bayani ko cakuduwar da ke ƙunshe da ƙayyadaddun abu a kowace raka'a na sauran ƙarfi. Musamman ma, yana nufin rukunin maida hankali ne a cikin ilmin sunadarai wanda ke bayyana adadin solute a cikin moles da aka narkar da kowace kilogiram na sauran ƙarfi. ana narkar da solute a cikin kilogram ɗaya na sauran ƙarfi. Ana amfani da kalmar “molality” sau da yawa tare da “molal”.