Possible Definitions:
1. Mission (n.) The act of sending, or the state of being sent; a being sent or delegated by authority, with certain powers for transacting business; comission.
2. Mission (n.) That with which a messenger or agent is charged; an errand; business or duty on which one is sent; a commission.
3. Mission (n.) Persons sent; any number of persons appointed to perform any service; a delegation; an embassy.
4. Mission (n.) An assotiation or organization of missionaries; a station or residence of missionaries.
5. Mission (n.) An organization for worship and work, dependent on one or more churches.
6. Mission (n.) A course of extraordinary sermons and services at a particular place and time for the special purpose of quickening the faith and zeal participants, and of converting unbelievers.
7. Mission (n.) Dismission; discharge from service.
8. Mission (v. t.) To send on a mission.
