1. the amount of rain that falls in a particular area during a specific period of time
2. the process or occurrence of rain falling

Examples

• The annual rainfall in this region is about 30 inches.
• Heavy rainfall caused flooding in several neighborhoods.
• Farmers depend on adequate rainfall for their crops.
• The weather station recorded only two inches of rainfall last month.
• Tropical areas typically receive more rainfall than desert regions.
• The lack of rainfall has created drought conditions.
• Scientists measure rainfall using special gauges.