What’s The Meaning Of Underdeveloped?

What’s The Meaning Of Underdeveloped? 1 : not normally or adequately developed underdeveloped muscles underdeveloped film. 2 : having a relatively low economic level of industrial production and standard of living (as from lack of capital) underdeveloped nations. Does underdeveloped mean developing? Underdevelopment is low level of development characterized by low real per capita income,