<synset id="n06254915" type="n">
<lex_filenum>10<lex_filenum/>
<word lex_id="0">ether<word/>
<word lex_id="0">aether<word/>
<pointer refs="n06254475">Hypernym<pointer/>
<def>a medium that was once supposed to fill all space and to support the propagation of electromagnetic waves<def/>
<synset/>