Exclusion (noun)

1. The act of excluding someone or something.
2. The state or fact of being excluded.

Origin:

Late middle english: from latin exclusio(n-), from excludere "shut out" (see exclude).

Examples:

1. The exclusion of women from the club was controversial.
2. Her exclusion from the team was a result of her poor performance.
3. The exclusion criteria for the study were strict.
4. The exclusion of certain foods from the diet was necessary for his health.
5. His exclusion from the will was a shock to everyone.