<synset id="n11481824" type="n">
<lex_filenum>19<lex_filenum/>
<word lex_id="0">mass defect<word/>
<word lex_id="0">mass deficiency<word/>
<pointer refs="n05024254">Hypernym<pointer/>
<def>the amount by which the mass of an atomic nucleus is less than the sum of the masses of its constituent particles<def/>
<synset/>