Stepfamily

A stepmother, stepmum or stepmom is a female non-biological parent married to one's preexisting parent. Children from her spouse's previous unions are known as her stepchildren. A stepmother-in-law is a stepmother of one's spouse.

A stepfamily (sometimes called a bonus family) is a family where at least one parent has children who are not biologically related to their spouse. Either parent, or both, may have children from previous relationships or marriages. Two known classifications for stepfamilies include "simple" stepfamilies, where only one member of the family's couple has a prior child or children and the couple does not have any children together, and "complex" or "blended" families, where both members of the couple have at least one child from another relationship.

A stepfather or stepdad is a biologically unrelated male parent married to one's preexisting parent.

A stepchild is the offspring of one's spouse, but not one's own offspring, either biologically or through adoption.

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