A mission, from the Latin missum (English: sent), is a specific task, often religious, which a person or group has been charged with or adopts as their main purpose. See also missionary, a related word in a religious context.The mission of an organization is often stated explicitly in a mission statement.
Examples
Religion
Mission , a Christian missionary movement or post
Mission , a base of missionary practice
List of Spanish missions, various missions established by the Spanish in the New World (modern Latin America, mostly) both to spread Christianity and to oversee colonization.
Bolivarian Missions, a series of social programs created during Hugo Chávez's rule of Venezuela.
Mission , an administrative area, often based on geographic regions, of proselytizing or service assignments by The Church of Jesus Christ of Latter-day Saints
Missionary
Mission president, a priesthood leadership position LDS Church
Politics and government
Diplomatic mission, a d
Source:
http://en.wikipedia.org/wiki/Mission: