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
Transdermal patches are a drug delivery system that allows medicine and ingredients to be absorbed straight into the bloodstream, bypassing the digestive system.
—Helena Kudiabor, SELF, 13 Mar. 2026
When food is digested slowly, glucose is released more gradually into the bloodstream, preventing a significant spike in blood sugar levels after eating.
—Jillian Kubala, Health, 9 Mar. 2026
The microplastics have already saturated her bloodstream.
—Linnie Greene, Pitchfork, 9 Mar. 2026
The danger is that bacteria can enter the bloodstream through the IV site.
—Cindy Krischer Goodman, Sun Sentinel, 5 Mar. 2026
See All Example Sentences for bloodstream
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Helena Kudiabor, SELF, 13 Mar. 2026
When food is digested slowly, glucose is released more gradually into the bloodstream, preventing a significant spike in blood sugar levels after eating.
—Jillian Kubala, Health, 9 Mar. 2026
The microplastics have already saturated her bloodstream.
—Linnie Greene, Pitchfork, 9 Mar. 2026
The danger is that bacteria can enter the bloodstream through the IV site.
—Cindy Krischer Goodman, Sun Sentinel, 5 Mar. 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 16 Mar. 2026.
Copy CitationKids Definition
bloodstream
noun
blood·stream
-ˌstrēm
: the flowing blood in a living thing with a circulatory system
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