The act of attaching, uniting, or joining together in a physical sense; consolidating.
The term is generally used to signify the connection of a smaller or subordinate unit to a larger or principal unit. For example, a smaller piece of land may be annexed to a larger one. Similarly, a smaller document may be annexed to a larger one, such as a codicil to a will.
Although physical joining is implied, actual contact is not always necessary. For example, an annexation occurs when a country acquires new territory even though the new territory is not immediately adjacent to the existing country.
In the law of real property, annexation is used to describe the manner in which a chattel is joined to property.