<synset id="n13513362" type="n">
<lex_filenum>22<lex_filenum/>
<word lex_id="0">meltdown<word/>
<word lex_id="0">nuclear meltdown<word/>
<pointer refs="n13530108">Hypernym<pointer/>
<def>severe overheating of the core of a nuclear reactor resulting in the core melting and radiation escaping<def/>
<synset/>