A single parent is a person who has a child or children but does not have a spouse or live-in partner to assist in the upbringing or support of the child in household together. Reasons for becoming a single parent include annulment, death, divorce, break-up, abandonment, domestic violence, rape, childbirth by a single person or single-person adoption. A single parent family is a family with children that is headed by a single parent.
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Single-parent in the context of Nuclear family
A nuclear family (also known as 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. It is in contrast to a single-parent family, a larger extended family, or a family with more than two parents. Nuclear families typically center on a married couple that may have any number of children. There are differences in definition among observers. Some definitions allow only biological children who are full-blood siblings, some consider adopted or half- and step-siblings a part of the immediate family, but others allow for a step-parent and any mix of dependent children, including stepchildren and adopted children.
Some sociologists and anthropologists consider the extended family structure to be the most common family structure in most cultures and at most times for humans, rather than the nuclear family.
View the full Wikipedia page for Nuclear family