intervention

(n) the act of intervening (as to mediate a dispute, etc.)
- it occurs without human intervention
intercession,
(n) a policy of intervening in the affairs of other countries interference,
(n) the act or fact of interposing one thing between or among others interposition,
(n) (law) a proceeding that permits a person to enter into a lawsuit already in progress; admission of person not an original party to the suit so that person can protect some right or interest that is allegedly affected by the proceedings
- the purpose of intervention is to prevent unnecessary duplication of lawsuits
(n) care provided to improve a situation (especially medical procedures or applications that are intended to relieve illness or injury) treatment,