"a self-sustaining nuclear reaction; a series of nuclear fissions in which neutrons released by splitting one atom leads to the splitting of others"@en-us . . "chain reaction"^^ . . . . "113445624"^^ . . . "chain reaction"@en-us . "0"^^ . "112685113"@en-us . "13445624-n"^^ . . "0"^^ . . "109723778"@en-us . . . . .