Meaning of DEVELOPING in English

[adjective] [before noun; not gradable]Many pregnant women are given scans so that the developing fetus can be seen. [before noun]The developing world/developing countries/less developed countries/developing nations are the poorer countries of the world, which include many of the countries of Africa, Latin America and Asia, which have less advanced industries.

Cambridge English vocab.      Кембриджский английский словарь.