| Subject | English | Arabic |
| IMF. | less developed countries | بلدان أقل تقدما |
| econ. | less developed countries | بلاد أقل نُمُوًّا |
| environ. | less developed country One of the world's poorest nations, typically small in area and population, with low per capita incomes, literacy levels and medical standards, subsistence agriculture and a lack of exploitable minerals and competitive industries | الدول الأقل تقدمًا |
| UN | Less Developed Country Energy Alternatives Planning System | نظام تخطيط مصادر الطاقة البديلة للبلدان الأقل نموا |