1. the process of organizing or equipping for war or military purposes
2. the process by which civilian institutions or activities become controlled by or take on characteristics of the military

Examples

• The militarization of the border increased tensions between the two countries.
• Critics worried about the militarization of local police forces.
• The nation’s rapid militarization prepared it for the coming conflict.
• The militarization of space remains a controversial topic.
• Many citizens opposed the militarization of their peaceful society.
• The government’s militarization efforts included expanding the army and navy.