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noun
a policy of creating strategic alliances in order to check the expansion of a hostile power or ideology or to force it to negotiate peacefully
"containment of communist expansion was a central principle of United States' foreign policy from 1947 to the 1975"
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noun
(physics) a system designed to prevent the accidental release of radioactive material from a reactor
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noun
the act of containing; keeping something from spreading
"the containment of the AIDS epidemic"
"the containment of the rebellion"