The term "oikoi" refers to the ancient Greek concept of households or family units. In Greek society, oikoi were fundamental social structures that included not just immediate family members but also extended relatives and servants. Each oikos was responsible for managing resources, raising children, and maintaining social and economic stability within the community. Oikoi played a crucial role in the organization of Greek city-states, such as Athens and Sparta. They were essential for the transmission of property and wealth across generations. The structure of oikoi influenced various aspects of Greek life, including politics, culture, and social norms.