drain·​age | \ ˈdrā-nij How to pronounce drainage (audio) \

Definition of drainage

1 : the act, process, or mode of draining also : something drained off
2 : a device for draining : drain also : a system of drains
3 : an area or district drained

Examples of drainage in a Sentence

Recent Examples on the Web Neighbors had opposed the original project, fearing worsening drainage and traffic issues along with concerns about the narrow lots showed on plans, and lower property values. Sue Kiesewetter, The Enquirer, "Fairfield Twp. trustees decide fate of proposed subdivision," 10 Mar. 2021 Innovyze offers software and technology that governments, utilities, engineering firms and corporations use to manage water and wastewater systems, drainage, distribution, flood modeling and other services. Nina Trentmann, WSJ, "Autodesk Names New CFO as It Looks to Do More Deals," 26 Feb. 2021 Since 1799 his main work had been as a consulting engineer on drainage and irrigation. Jenny Uglow, The New York Review of Books, "The Reader of Rocks," 23 Feb. 2021 By focusing on the Bay Area, Parsons learned that the cumulative stress of buildings is generally less than that of other forces that cause elevation changes, such as such as erosion, drainage and tectonic action. Kurtis Alexander, San Francisco Chronicle, "San Francisco Bay Area sinking under its own weight - 3.5 trillion pounds," 19 Feb. 2021 The cost of adding drainage, pipes and other groundwork can get expensive. Amber Randall, sun-sentinel.com, "After years of waiting, a million-dollar dog park in Palm Beach County moves closer to reality," 18 Feb. 2021 The controversial Medline project dominated political debate in 2020, pitting economic growth against concerns about the impact of development on drainage and infrastructure in St. Tammany. Andrew Canulette And Sara Pagones | Staff Writers, NOLA.com, "Counting down the rest of St. Tammany's Top 10 stories of 2020," 29 Dec. 2020 This layer helps to shape the terrain while aiding drainage and aeration. Jennifer Nalewicki, Popular Mechanics, "How to Make a Terrarium in 6 Steps," 16 Nov. 2020 Emergency officials reported overwhelmed sewers and drainage canals in southwest Florida, with up to 3 feet of water backing up into streets from Miami-Dade to Fort Lauderdale. Daniel Cusick, Scientific American, "Record-Breaking Tropical Storm Eta Drenches Florida," 10 Nov. 2020

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'drainage.' 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 drainage

1652, in the meaning defined at sense 1

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Time Traveler for drainage

Time Traveler

The first known use of drainage was in 1652

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Statistics for drainage

Last Updated

26 Mar 2021

Cite this Entry

“Drainage.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/drainage. Accessed 16 Apr. 2021.

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More Definitions for drainage



English Language Learners Definition of drainage

: the act or process of draining something : the act or process of removing water or liquid from a place or thing


drain·​age | \ ˈdrā-nij How to pronounce drainage (audio) \

Kids Definition of drainage

: the act or process of removing a liquid Drainage of the flooded area has begun.


drain·​age | \ ˈdrā-nij How to pronounce drainage (audio) \

Medical Definition of drainage

1 : the act or process of drawing off fluids from a cavity or wound by means of suction or gravity
2 : a process of releasing internal conflicts or pent-up feelings (as hostility or guilt)

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More from Merriam-Webster on drainage

Nglish: Translation of drainage for Spanish Speakers

Britannica English: Translation of drainage for Arabic Speakers

Britannica.com: Encyclopedia article about drainage

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