#1 mission n. [missionary post, missionary station, foreign mission] an organization of missionaries in a foreign land sent to carry on religious work. wn #2 mission n. [military mission] an operation that is assigned by a higher headquarters; "the planes were on a bombing mission". wn #3 mission n. [charge, commission] a special assignment that is given to a person or group; "a confidential mission to London"; "his charge was deliver a message". wn #4 mission n. [missionary work] the organized work of a religious missionary. wn #5 mission n. [deputation, commission, delegation, delegacy] a group of representatives or delegates. wn