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outflow

1 of 2

verb

out·​flow ˈau̇t-ˌflō How to pronounce outflow (audio)
ˌau̇t-ˈflō
outflowed; outflowing; outflows
Synonyms of outflownext

intransitive verb

: to flow out

outflow

2 of 2

noun

out·​flow ˈau̇t-ˌflō How to pronounce outflow (audio)
1
: a flowing out
the outflow of dollars
2
: something that flows out
outflow of a sewage treatment plant

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
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Verb
This represented the first time astronomers had seen flares from Sgr A* in the mid-infrared range of the electromagnetic spectrum, with the team behind these observations using them to better model outflows from supermassive black holes in research released in November. Robert Lea, Space.com, 24 Dec. 2025 Most funds allow investors to redeem quarterly but cap the total outflows at around 5% to avoid being forced sellers of illiquid assets — a recipe for losses. Liz Hoffman, semafor.com, 10 Dec. 2025
Noun
The team behind this research theorizes that the switch-in-outflow method doesn't hinge on how much matter is falling toward the black hole, but on the configuration of the magnetic fields within the accretion disk. Robert Lea, Space.com, 14 Jan. 2026 Despite the cooling of the outflow, 2025 was still below the average 47% inbound rate since 2004 and the 52% high of 2014. Jonathan Lansner, Oc Register, 12 Jan. 2026 See All Example Sentences for outflow

Word History

First Known Use

Verb

before the 12th century, in the meaning defined above

Noun

1785, in the meaning defined at sense 1

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

Browse Nearby Words

Cite this Entry

“Outflow.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/outflow. Accessed 19 Jan. 2026.

Kids Definition

outflow

noun
out·​flow
ˈau̇t-ˌflō
1
: a flowing out
an outflow of fans from the stadium
2
: something that flows out

More from Merriam-Webster on outflow

Last Updated: - Updated example sentences
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