pac·i·fi·ca·tion 
(păs′ə-fĭ-kāshən)
(păs′ə-fĭ-kāshən)n.
1. The act of pacifying or the condition of being pacified; appeasement.
2.
a. Reduction, as of a rebellious district, to peaceful submission: "Hadrian waged a brutal war of pacification against tenacious peasants of Judaea" (Kenneth W. Harl).
b. Practical measures or policy aiming to effect this type of submission.
3. often Pacification A peace treaty: the Pacification of Ghent.
pa·cifi·ca′tor (pə-sĭfĭ-kā′tər) n.
pa·cifi·ca·to′ry (-kə-tôr′ē) adj.