In*clu"sion (?), n. [L. inclusio: cf. F. inclusion. See Include.]
1.
The act of including, or the state of being included; limitation; restriction; as, the lines of inclusion of his policy.
Sir W. Temple.
2. Min.
A foreign substance, either liquid or solid, usually of minute size, inclosed in the mass of a mineral.
© Webster 1913.