containment

1. The state of being contained. (uncountable)
2. The state of containing. (countable, uncountable)
3. A policy of checking the expansion of a hostile foreign power by creating alliances with other states; especially the foreign policy strategy of the United States in the early years of the Cold War. (countable, uncountable)
4. A physical system designed to prevent the accidental release of radioactive or other dangerous materials from a nuclear reactor or industrial plant. (countable)
5. An inclusion. (countable)

Plural containments