<synset id="n15109391" type="n">
<lex_filenum>27<lex_filenum/>
<word lex_id="0">zirconium oxide<word/>
<word lex_id="0">zirconia<word/>
<word lex_id="0">zirconium dioxide<word/>
<pointer refs="n14971519">Hypernym<pointer/>
<def>a white crystalline oxide<def/>
<def>used in refractories and in insulation and abrasives and enamels and glazes<def/>
<synset/>