1. the reduction or exhaustion of a resource or supply
2. the state of being reduced in quantity or weakened

Examples

• The depletion of the ozone layer is a serious environmental concern.
• Overfishing has led to the depletion of many fish populations.
• The company’s rapid expansion caused a depletion of its cash reserves.
• Soil depletion makes farming more difficult in this region.
• The athlete’s energy depletion was evident after the marathon.
• Scientists are studying the depletion of groundwater in desert areas.
• The depletion of natural resources requires immediate attention.