rain·​wa·​ter | \ ˈrān-ˌwȯ-tər, -ˌwä-\

Definition of rainwater 

(Entry 1 of 2)

: water fallen as rain that has not collected soluble matter from the soil and is therefore soft


biographical name
Rain·​wa·​ter | \ ˈrān-ˌwȯ-tər, -ˌwä-\

Definition of Rainwater (Entry 2 of 2)

L(eo) James 1917–1986 American physicist

Examples of rainwater in a Sentence


a bucket filled with rainwater

Recent Examples on the Web: Noun

The rainwater would have quickly run off over the surface, shaping the network of valleys. Nola Taylor Redd, Space.com, "Geometry Helps Solve the Mystery of Mars' Water," 13 July 2018 Because water can't permeate plastic, rainwater won't soaking the planting bed. The Editors, Good Housekeeping, "How to Mulch Your Garden and Stop Weeds in Their Tracks," 26 June 2018 When the rainwater is commingled with it, it is rendered kosher and ready. Kristin E. Holmes, Philly.com, "A mikvah building boomlet as Jewish ritual baths open around the region," 12 Apr. 2018 By taking a statistical approach to the features, a trio of researchers now argue for rivers of rainwater. Nola Taylor Redd, Space.com, "Geometry Helps Solve the Mystery of Mars' Water," 13 July 2018 There were wastebaskets catching rainwater seeping through the ceiling, cardboard and wood chips and carpets meant to soak up days worth of dampness at Pimlico Race Course. Melissa Hoppert, New York Times, "Justify Wins the Preakness, Keeping Alive Hopes for a Triple Crown," 19 May 2018 By collecting rainwater and using wind power to produce electricity, the tiny home becomes its own self-supporting house. Rachel Swalin, ELLE Decor, "The Ark Shelter May Just Be The Most Stylish Tiny House On The Planet," 7 Mar. 2017 Its water system is able to capture rainwater and generate potable water from the humidity lingering in the air. Liz Stinson, Curbed, "Tiny house from UN Environment and Yale raises the bar for eco-living," 11 July 2018 That rainwater has soaked into the soil where plants’ roots can absorb it and pass it up to their leaves for cooling purposes. Beth Botts, chicagotribune.com, "What does scorching heat mean for trees and plants?," 3 July 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'rainwater.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of rainwater


before the 12th century, in the meaning defined above

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8 Jan 2019

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The first known use of rainwater was before the 12th century

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English Language Learners Definition of rainwater

: water that falls as rain


rain·​wa·​ter | \ ˈrān-ˌwȯ-tər, -ˌwä-\

Kids Definition of rainwater

: water from rain

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Rhyming Dictionary: Words that rhyme with rainwater

Spanish Central: Translation of rainwater

Nglish: Translation of rainwater for Spanish Speakers

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