Meaning

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

noun (physics) a system designed to prevent the accidental release of radioactive material from a reactor

noun the act of containing; keeping something from spreading

originEtymology tree Proto-Indo-European *ḱe? Proto-Indo-European *ḱóm Proto-Italic *kom Proto-Italic *kom- Latin con- Proto-Indo-European *ten- Proto-Indo-European *tn̥-eh₁-(ye)-tider. Proto-Italic *tenēō Latin teneō Latin contineōder. Latin continērelbor. Old French contenirbor. English contain Proto-Indo-European *-mn̥ Proto-Indo-European *-mn̥tom Proto-Italic *-mentom Latin -mentum Old French…

Etymology from Wiktionary, CC BY-SA 3.0