Definition of "recriticality" []

• A return to a point at which a nuclear reaction becomes self-sustaining. (noun)

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• "Boron absorbs neutrons and helps prevent so-called recriticality, in which the nuclear reaction accelerates and reaches a self-sustaining level that is difficult to stop."
• "Kyushu University's Mr. Kudo said that the restart of fission, a phenomenon known as recriticality, could not be ruled out until the reactors could be opened, allowing for an examination of the melted fuel."
• "The possibility of recriticality is not zero,'' TEPCO said in announcing steps to counter a possible fall in water levels in the pool storing the rods."