WordWeb Online

1. A formal message requesting something that is submitted to an authority
   - request, postulation
    
2. Reverent petition to a deity
   - prayer, orison [archaic]
    
3. (law) a formal written request for judicial action
    
4. A compilation of signatures built in order to exert moral authority in support of a specific cause

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

Derived forms: petitioning, petitions, petitioned

Type of: asking, bespeak, call for, content, message, quest, request, subject matter, substance

Encyclopedia: Petition