Pronunciation: (in-klOO'zhun),[key] —n. 1. the act of including.
2. the state of being included.
3. something that is included.
4. Biol.a body suspended in the cytoplasm, as a granule.
5. Mineral.a solid body or a body of gas or liquid enclosed within the mass of a mineral.
7. Logic,Math.the relationship between two sets when the second is a subset of the first.