I love my 'mom' and 'dad' who adopted me, but some day I would like to meet my biological parents.
The individual who is not the biological parent of the child or children is referred to as the stepparent.
Stepfamilies must cope with outside influences and ongoing change due to issues with the other biological parent and family members.
In addition, 50 percent of children under age 13 as of 2004 lived with one biological parent and the parent's partner.
Many other children have lived in single-parent families for a time before their biological parent remarried, when they moved into a two-parent family with one biological parent and one stepparent.
Stepparent: A non-biological parent who marries or cohabitates with a biological parent.