Definition of missioning:
(n) :
(countable) A set of tasks that fulfills a purpose or duty; an assignment set by an employer, or by oneself.
(n) :
A important goal or purpose; an objective.
(n) :
A number of people appointed to perform any service; a delegation; an embassy.
(n) :
(countable) A missionary expedition.
(n) :
(in the plural, "the missions") Third World charities, particularly those which preach as well as provide aid.
(n) :
(countable, Catholicism) An infrequent gathering of religious believers in a parish, usually part of a larger regional event with a central theme.