abdominal nerve plexus abdominal nerve plexus /æbˈdɒmɪnəl nɜːrv ˈplɛksəs/

noun

1. A large plexus of sympathetic nerves in the abdomen behind the stomach  ( abdominal nerve plexus , coeliac plexus , plexus celiacus , solar plexus )
   a large plexus of sympathetic nerves in the abdomen behind the stomach