bloodstream
noun
blood·stream
ˈbləd-ˌstrēm 
1
: the flowing blood in a circulatory system
2
: a mainstream of power or vitality
introduce into the economic bloodstream a large amount of money—
Harper's
Harper'sExamples of bloodstream in a Sentence
The drug is now entering the bloodstream.
Recent Examples on the Web
Applied daily as a gel to the shoulders and upper arms, it is absorbed into the bloodstream through the skin.
—Hannah Seo, Scientific American, 22 July 2025
In extreme cases, the bacteria can get into the bloodstream and cause more severe illnesses such as arterial infections or endocarditis.
—Alia Shoaib, MSNBC Newsweek, 18 July 2025
Even at low levels, lead in a child’s bloodstream can cause developmental issues, the agency’s website says.
—R. Christian Smith, Chicago Tribune, 15 July 2025
The compact device that's designed to be implanted under the skin only weighs 0.07 oz (2 g), and features a tiny reservoir for glucagon, a hormone that stimulates your liver to release glucose into your bloodstream.
—Abhimanyu Ghoshal, New Atlas, 10 July 2025
See All Example Sentences for bloodstream
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Hannah Seo, Scientific American, 22 July 2025
In extreme cases, the bacteria can get into the bloodstream and cause more severe illnesses such as arterial infections or endocarditis.
—Alia Shoaib, MSNBC Newsweek, 18 July 2025
Even at low levels, lead in a child’s bloodstream can cause developmental issues, the agency’s website says.
—R. Christian Smith, Chicago Tribune, 15 July 2025
The compact device that's designed to be implanted under the skin only weighs 0.07 oz (2 g), and features a tiny reservoir for glucagon, a hormone that stimulates your liver to release glucose into your bloodstream.
—Abhimanyu Ghoshal, New Atlas, 10 July 2025
See All Example Sentences for bloodstream
Cite this Entry
“Bloodstream.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/bloodstream. Accessed 29 Jul. 2025.
Copy CitationKids Definition
bloodstream
noun
blood·stream
-ˌstrēm
: the flowing blood in a living thing with a circulatory system
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