1. the quality or state of being deadly or capable of causing death

Examples

• The lethality of the new virus strain concerned health officials.
• Military experts studied the lethality of various weapons systems.
• The snake’s venom has a high degree of lethality.
• Researchers measured the lethality rate of the experimental drug.
• The lethality of the storm was unprecedented in the region’s history.
• Safety protocols were designed to reduce the lethality of industrial accidents.