Simple Definition of rainfall

from our Learner's Dictionary

rainfall

noun

ˈreɪnˌfɑːl How to pronounce rainfall (audio)
plural rainfalls
: the amount of rain that falls on a particular area
This area has an average annual rainfall of 12 inches.
areas with heavy rainfalls
an increase in annual rainfall

Cite this Entry

“Rainfall.” Merriam-Webster.com Simple Definition, Merriam-Webster, https://www.merriam-webster.com/simple/rainfall. Accessed 23 Jun. 2026.

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