|Origin:||Latin petitio, from petere 'to try to get or find'|
a written request signed by a lot of people, asking someone in authority to do something or change something
a petition against the new road
They wanted me to sign a petition against experiments on animals.
Local residents have drawn up a petition to protest the hospital closure.
petition drive American English (=an attempt to get a lot of people to sign a petition)
an official letter to a law court, asking for a legal case to be considered
a formal prayer or request to someone in authority or to God