noun / verb
petition
puh-TISH-un/pəˈtɪʃn/
A formal request to an authority, or the act of making one.
The organizer submits the signed petition to an official.

Etymology
Latin petere links seeking something with asking for it. The resulting action noun could mean a claim or request, which developed into the formal written appeal represented by a petition.
In context
450 chefs have signed a petition calling on Congress to support the SAFE Seafood Act
More examples
- Hundreds signed the petition.
- She filed a petition with the court.
- They petitioned for a change in the rules.
Forms
petition · petitions · petitioned · petitioning
petitioner noun — a person making a formal request