the total amount of rain that falls in a particular area in a particular amount of time; an occasion when rain fallsThere has been below average rainfall this month.an average annual rainfall of 10 cmWordfinderclimatearid,climate,continental climate,equatorial,frigid,harsh,humidity,rainfall,tropical,zoneOxford Collocations Dictionaryadjectiveabundant,excessive,heavy,…verb + rainfallhave,receive,measure,…Seefull entrySee related entries:RainExtra examplesThe area has a high annual rainfall.There have been heavy rainfalls this month.We need a good rainfall to save the crops.We have an average annual rainfall of around 750 mm.
See rainfall in the Oxford Learner's Dictionary of Academic EnglishSee rainfall in the Oxford Advanced American Dictionary