- A family unit consisting of two parents (traditionally a mother and a father) and their children.
- 2020 March, David Brooks, “The Nuclear Family Was a Mistake”, in The Atlantic, ISSN 1072-7825:
- The initial result of that fragmentation, the nuclear family, didn’t seem so bad. But then, because the nuclear family is so brittle, the fragmentation continued. In many sectors of society, nuclear families fragmented into single-parent families, single-parent families into chaotic families or no families.
a family unit consisting of a father, mother and children