bloodstream

noun

blood·​stream ˈbləd-ˌstrēm How to pronounce bloodstream (audio)
1
: the flowing blood in a circulatory system
2
: a mainstream of power or vitality
introduce into the economic bloodstream a large amount of moneyHarper's

Examples of bloodstream in a Sentence

The drug is now entering the bloodstream.
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.
Leaky gut can also allow organisms that make up the intestinal microbiome—which are supposed to remain in the intestines—to migrate into the bloodstream and spread infection. Jeffrey Kluger, Time, 20 May 2025 Therefore, any microbe that goes into your eyes could travel via the bloodstream to other parts of your body. Bruce Y. Lee, Forbes.com, 14 May 2025 However, the stomach's digestive enzymes can eliminate curcumin from your bloodstream by metabolizing it before it is absorbed. Anna Giorgi, Verywell Health, 8 May 2025 The pollutants impacting air quality are heavily influenced by temperature and wildfire activity and can penetrate deep into the lungs and even enter the bloodstream. Anna Skinner, MSNBC Newsweek, 1 May 2025 See All Example Sentences for bloodstream

Word History

First Known Use

13th century, in the meaning defined at sense 1

Time Traveler
The first known use of bloodstream was in the 13th century

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Cite this Entry

“Bloodstream.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/bloodstream. Accessed 29 May. 2025.

Kids Definition

bloodstream

noun
blood·​stream -ˌstrēm How to pronounce bloodstream (audio)
: the flowing blood in a living thing with a circulatory system

Medical Definition

bloodstream

noun
blood·​stream -ˌstrēm How to pronounce bloodstream (audio)
: the flowing blood in a circulatory system

More from Merriam-Webster on bloodstream

Last Updated: - Updated example sentences
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