<synset id="n00816530" type="n">
<lex_filenum>04<lex_filenum/>
<word lex_id="0">celestial navigation<word/>
<word lex_id="0">astronavigation<word/>
<pointer refs="n00815801">Hypernym<pointer/>
<def>navigating according to the positions of the stars<def/>
<synset/>