Meaning of interventionism

in•ter•ven•tion•ism

Pronunciation: (in"tur-ven'shu-niz"um), [key]
— n.
  1. the policy or doctrine of intervening, esp. government interference in the affairs of another state or in domestic economic affairs.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.