petition petition /pəˈtɪʃən/

noun

1. () A formal message requesting something that is submitted to an authority  ( postulation , petition , request )
   a formal message requesting something that is submitted to an authority
     The activists collected signatures for a petition supporting their cause.
   The activists collected signatures for a petition supporting their cause.
   
2. Reverent petition to a deity  ( orison [Archaic] , petition , prayer )
   reverent petition to a deity
   

verb

1. () Write a petition for something to somebody; request formally and in writing  ( petition )
   write a petition for something to somebody; request formally and in writing