Arnstein Wills & Probate Lawyer, Ontario, page 4

To deliberately prevent someone from inheriting something. This is usually done by a provision in a will stating that someone who would ordinarily inherit property -- a close family member, for example -- should not receive it. In most states, you cannot completely disinherit your spouse; a surviving spouse has the right to claim a portion (usually one-third to one-half) of the deceased spouse's estate. With a few exceptions, however, you can expressly disinherit children.

A will that is completely handwritten, dated and signed by the person making it. Holographic wills are generally not witnessed. Although it's legal in many states, making a holographic will is never advised except as a last resort.

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.'

A statute that allows people to name a beneficiary to inherit stocks or bonds without probate. The owner of the securities can register them with a broker using a simple form that names a person to receive the property after the owner's death. Every state but Texas has adopted the statute.

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.

The method by which property is distributed when a person dies without a valid will. Each state's law provides that the property be distributed to the closest surviving relatives. In most states, the surviving spouse, children, parents, siblings, nieces and nephews, and next of kin inherit, in that order.