Nuclear family

Group of two parents and their children

Nuclear family

A nuclear family – also called an elementary family, atomic family, or conjugal family – is a family group consisting of two parents and their children (one or more), typically living in one home residence. The term is used in contrast to both a single-parent family and a larger extended family (which may include more than two parents). A nuclear family typically centers on a married couple that may have any number of children.

From Wikipedia, under CC BY-SA. More on occurri.