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
Granola bars Many granola bars are loaded with syrup, honey or sugar as primary sweeteners and often don't include enough fiber, protein or healthy fat to slow digestion, so the sugars hit the bloodstream fast.
—Deirdre Bardolf, FOXNews.com, 9 Oct. 2025
The hormones pass from the patch through the skin and into the bloodstream.
—Merrill Fabry, Time, 9 Oct. 2025
The protein usually binds to amyloid-beta and transports it across the blood-brain barrier into the bloodstream to be eliminated.
—Mrigakshi Dixit, Interesting Engineering, 7 Oct. 2025
The protein and fiber help slow digestion, which reduces how quickly your body absorbs sugar into the bloodstream.
—Jillian Kubala, Health, 6 Oct. 2025
See All Example Sentences for bloodstream
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Deirdre Bardolf, FOXNews.com, 9 Oct. 2025
The hormones pass from the patch through the skin and into the bloodstream.
—Merrill Fabry, Time, 9 Oct. 2025
The protein usually binds to amyloid-beta and transports it across the blood-brain barrier into the bloodstream to be eliminated.
—Mrigakshi Dixit, Interesting Engineering, 7 Oct. 2025
The protein and fiber help slow digestion, which reduces how quickly your body absorbs sugar into the bloodstream.
—Jillian Kubala, Health, 6 Oct. 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 16 Oct. 2025.
Copy CitationKids Definition
bloodstream
noun
blood·stream
-ˌstrēm
: the flowing blood in a living thing with a circulatory system
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