Pe·ti'tion·a·ry adjective 1. Supplicatory; making a petition. « Pardon Rome, and any petitionary countrymen.» Shak. 2. Containing a petition; of the nature of a petition; as, a petitionary epistle. Swift. Found on http://www.encyclo.co.uk/webster/P/66
adjective of the nature of or expressing a petition; `the petitionary procedure had a quality of indecisiveness` Found on https://www.encyclo.co.uk/local/20974