Source : Free On-Line Dictionary of Computing

NOMEX underwear
     
        /noh'meks uhn'-der-weir/ [{Usenet}] Synonym {asbestos
        longjohns}, used mostly in auto-related {mailing lists} and
        newsgroups.  NOMEX underwear is an actual product available on
        the racing equipment market, used as a fire resistance measure
        and required in some racing series.
     
        [{Jargon File}]