1. the process or act of making something more intense, stronger, or more extreme
2. the state or result of becoming more intense or severe

Examples

• The intensification of the conflict led to increased military presence in the region.
• Climate scientists warn of the intensification of extreme weather events.
• The coach called for an intensification of training during the final weeks before the championship.
• The intensification of colors in the sunset was breathtaking.
• Economic pressures caused an intensification of competition among companies.
• The intensification of her symptoms required immediate medical attention.