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The voluntary abandonment of one spouse by the other, without the abandoned spouse's consent. Commonly, desertion occurs when a spouse leaves the marital home for a specified length of time. Desertion is a grounds for divorce in states with fault divorce.

A divorce obtained in a different state or country from the place where one spouse resides at the time of the divorce. As a general rule, foreign divorces are recognized as valid if the spouse requesting the divorce became a resident of the state or country granting the divorce, and if both parties consented to the jurisdiction of the foreign court. A foreign divorce obtained by one person without the consent of the other is normally not valid, unless the nonconsenting spouse later acts as if the foreign divorce were valid, for example, by remarrying.

A court procedure by which an adult becomes the legal parent of someone who is not his or her biological child. Adoption creates a parent-child relationship recognized for all legal purposes -- including child support obligations, inheritance rights and custody.

A child born to your spouse before your marriage whom you have not legally adopted. If you adopt the child, he or she is legally treated just like a biological offspring. Under the Uniform Probate Code, followed in some states, a stepchild belongs in the same class as a biological child and will inherit property left 'to my children.' In other states, a stepchild is not treated like a biological child unless he or she can prove that the parental relationship was established when he or she was a minor and that adoption would have occurred but for some legal obstacle.

A person who initiates a lawsuit. A synonym for plaintiff, used almost universally in some states and in others for certain types of lawsuits, most commonly divorce and other family law cases.

An immediate family member of someone who immigrates to the United States. In most cases, a person who is eligible to receive some type of visa or green card can also obtain green cards or similar visas for accompanying relatives. Accompanying relatives include spouses and unmarried children under the age of 21.

Someone appointed by a court to care for the property of a minor child that is not supervised by an adult under some other legal method, such as a trust. A guardian of the estate may also be called a 'property guardian' or 'financial guardian.' See also guardian.

In community property states, property owned and controlled entirely by one spouse in a marriage. At divorce, separate property is not divided under the state's property division laws, but is kept by the spouse who owns it. Separate property includes all property that a spouse obtained before marriage, through inheritance or as a gift. It also includes any property that is traceable to separate property -- for example, cash from the sale of a vintage car owned by one spouse before marriage-and any property that the spouses agree is separate property. Compare community property and equitable distribution.