out·​flow | \ ˈau̇t-ˌflō How to pronounce outflow (audio) , ˌau̇t-ˈflō \
outflowed; outflowing; outflows

Definition of outflow

 (Entry 1 of 2)

intransitive verb

: to flow out


out·​flow | \ ˈau̇t-ˌflō How to pronounce outflow (audio) \

Definition of outflow (Entry 2 of 2)

1 : a flowing out the outflow of dollars
2 : something that flows out outflow of a sewage treatment plant

Synonyms & Antonyms for outflow

Synonyms: Noun

Antonyms: Noun

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Examples of outflow in a Sentence

Noun We joined the outflow of fans from the stadium after the game. The vents provide improved outflow of air.
Recent Examples on the Web: Verb Both of the new creations — Standard Life Aberdeen Plc and Janus Henderson Group Plc — have suffered big customer outflows in the quarters following their transformations. Washington Post, 29 Nov. 2019 The audit found that a massive exfiltration of data from Mr. Bezos’ device began hours after receiving the encrypted video file from Prince Mohammed, with the amount of outflowing data surging by nearly 30,000% and continuing for months. Justin Scheck, WSJ, 23 Jan. 2020 Storms in eastern and southern Arizona began to die out and outflow winds from those decaying storms collided and pushed up massive walls of dust in the desert south of Phoenix. Weldon B. Johnson, azcentral, 30 Dec. 2019 In a dry month, outflows through the canal can reduce the lake’s level by 80cm. The Economist, 19 Sep. 2019 Regulators appear more confident that years of regulatory measures will keep hot money outflows manageable. John Authers | Bloomberg, Washington Post, 21 May 2019 However, the hydrogen and helium gas on WASP-121b is outflowing, akin to a river, dragging the metals with them, Sing continued. Fox News, 2 Aug. 2019 But there are concerns that in a stressed market, outflows from ETFs might make a bad situation worse. The Economist, 11 July 2019 Heavy rains routinely overload Baltimore’s aged sewer system, sending human waste out of manholes and outflows that pour directly into the Jones Falls. Scott Dance, baltimoresun.com, 30 May 2018 Recent Examples on the Web: Noun The outflow of residents from Manhattan fueled headlines about New York’s demise and the decline of urban America. New York Times, 29 Dec. 2021 The company reported just $234 million operating cash outflow last year and generated $1 billion in H1 2021. Trefis Team, Forbes, 20 Oct. 2021 Calibre 400 is just the latest outflow from a sea change that first emerged in the perennial competition between Switzerland’s two biggest rivals: Rolex and Omega. Alex Doak, Wired, 30 Dec. 2021 California’s net outflow surged 75% between July 1, 2020 and July 1, 2021 compared to the same period from 2018 to 2019. The Editorial Board, WSJ, 28 Dec. 2021 But some 251,000 women over 20 re-entered the labor force in October, and 138,000 took jobs, after an outflow the month before. Democrat-gazette Staff From Wire Reports, Arkansas Online, 6 Nov. 2021 Wall Street was expecting an outflow of almost $3 billion. Jon Sindreu, WSJ, 28 July 2021 Investors pulled about $6 billion from high-yield mutual and exchange-traded funds in the two weeks ended Dec. 1, the biggest such outflow since the coronavirus surge of September 2020, according to Refinitiv Lipper data. Matt Wirz, WSJ, 7 Dec. 2021 The restaurant industry is just one of many that have been waylaid by this outflow of people. New York Times, 28 Nov. 2021

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


before the 12th century, in the meaning defined above


1785, in the meaning defined at sense 1

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

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Cite this Entry

“Outflow.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/outflow. Accessed 24 Jan. 2022.

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More Definitions for outflow



English Language Learners Definition of outflow

: an outward flow or movement of something

More from Merriam-Webster on outflow

Britannica English: Translation of outflow for Arabic Speakers

Britannica.com: Encyclopedia article about outflow


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