South English Estate Lawyer, Iowa, page 4

A child or spouse who is not mentioned in a will and whom the court believes was accidentally overlooked by the person who made the will. For example, a child born or adopted after the will is made may be deemed a pretermitted heir. If the court determines that an heir was accidentally omitted, that heir is entitled to receive the same share of the estate as she would have if the deceased had died without a will. A pretermitted heir is sometimes called an 'omitted heir.'

In general terms, an augmented estate consists of property owned by both a deceased person and his or her spouse. The concept of the augmented estate is used only in some states. Its value is calculated only if a surviving spouse declines whatever he or she was left by will and instead claims a share of the deceased spouse's estate. (This is called taking against the will.) The amount of this 'statutory share' or 'elective share' depends on state law.

Under a will, the failure of a gift of property. A gift lapses when the beneficiary dies before the person who made the will, and no alternate has been named. Some states have anti-lapse statutes, which prevent gifts to relatives of the deceased person from lapsing unless the relative has no heirs of his or her own. A lapsed gift becomes part of the residuary estate.

The document given to an executor by the probate court, authorizing the executor to settle the estate according to either a will or the state's intestate succession laws.