Fourth World
noun
1.
the world's most poverty-stricken nations, especially in Africa and Asia, marked by very low GNP per capita and great dependence upon foreign economic aid.
Compare
First World
,
Second World
,
Third World
.
Origin
1970-75
British Dictionary definitions for
Fourth World
Fourth World
noun
1.
the poorest countries in the most undeveloped parts of the world in Africa, Asia, and Latin America
2.
the poorest people in developed countries