n. The act of annexing or uniting at the end; the act of adding, as a smaller thing to a greater; the act of connecting; conjunction; addition: as, the annexation of Texas to the United States.n. That which is annexed or added.n. In law: The attachment of chattels to a freehold, in such a manner as to give them the character of fixtures.n. In Scots law, the appropriating of church lands to the crown, or the union of lands lying at a distance from the kirk to which they belong to the kirk which is nearest to them.