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.
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Who These Jobs Really Are The reforms are aimed at the policy bloodstream of the administrative state.
—James Broughel, Forbes.com, 30 Jan. 2026
The delivery method has the advantage of allowing direct absorption into the bloodstream without requiring an injection.
—Ana Castelain, Bloomberg, 28 Jan. 2026
Maybe by whatever was floating through his bloodstream—Adi didn’t know.
—Jonathan Miles, Harpers Magazine, 27 Jan. 2026
In more severe cases, the infection can spread to the bloodstream and lead to more serious complications.
—Moná Thomas, PEOPLE, 27 Jan. 2026
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James Broughel, Forbes.com, 30 Jan. 2026
The delivery method has the advantage of allowing direct absorption into the bloodstream without requiring an injection.
—Ana Castelain, Bloomberg, 28 Jan. 2026
Maybe by whatever was floating through his bloodstream—Adi didn’t know.
—Jonathan Miles, Harpers Magazine, 27 Jan. 2026
In more severe cases, the infection can spread to the bloodstream and lead to more serious complications.
—Moná Thomas, PEOPLE, 27 Jan. 2026
See All Example Sentences for bloodstream
Cite this Entry
“Bloodstream.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/bloodstream. Accessed 5 Feb. 2026.
Copy CitationKids Definition
bloodstream
noun
blood·stream
-ˌstrēm
: the flowing blood in a living thing with a circulatory system
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