inclusion

noun

1. the act of including.
2. the state of being included.
3. something that is included.
4. Biology. a body suspended in the cytoplasm, as a granule.
5. Mineralogy. a solid body or a body of gas or liquid enclosed within the mass of a mineral.
6. Petrography. xenolith.
7. Logic, Mathematics. the relationship between two sets when the second is a subset of the first.

noun

1. the act of including or the state of being included
2. something included
3. geology a solid fragment, liquid globule, or pocket of gas enclosed in a mineral or rock
4. maths
   1. the relation between two sets that obtains when all the members of the first are members of the secondSymbol: X ⊆ Y
   2. strict inclusion or proper inclusionthe relation that obtains between two sets when the first includes the second but not vice versaSymbol: X ⊂ Y
5. engineering a foreign particle in a metal, such as a particle of metal oxide

n.

1. A nonliving mass, such as a droplet of fat, in the cytoplasm of a cell.
2. The process by which a foreign or heterogenous structure is misplaced in another tissue.