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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The smallest, what are called ultrafine particles, even slip through the alveolar capillary barrier itself, crossing into the bloodstream, and from there travel throughout the body, including to the heart, the brain, and the kidneys to initiate even more destruction and disease (see below).
—Bill Frist, Forbes.com, 18 Sep. 2025
Small particles in wildfire smoke penetrate into the lungs and can circulate in the bloodstream.
—Evan Bush, NBC news, 18 Sep. 2025
In 2022, Florida weathered a bad outbreak of meningococcal disease, a type of fast-moving bacterial infection that can become fatal after entering the bloodstream or the lining of the brain and spinal cord.
—Jamie Ducharme, The Atlantic, 17 Sep. 2025
Salmonella infection may spread from the intestines to the bloodstream and then to other parts of the body.
—Matthew Robinson, MSNBC Newsweek, 16 Sep. 2025
See All Example Sentences for bloodstream
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Bill Frist, Forbes.com, 18 Sep. 2025
Small particles in wildfire smoke penetrate into the lungs and can circulate in the bloodstream.
—Evan Bush, NBC news, 18 Sep. 2025
In 2022, Florida weathered a bad outbreak of meningococcal disease, a type of fast-moving bacterial infection that can become fatal after entering the bloodstream or the lining of the brain and spinal cord.
—Jamie Ducharme, The Atlantic, 17 Sep. 2025
Salmonella infection may spread from the intestines to the bloodstream and then to other parts of the body.
—Matthew Robinson, MSNBC Newsweek, 16 Sep. 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 24 Sep. 2025.
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bloodstream
noun
blood·stream
-ˌstrēm
: the flowing blood in a living thing with a circulatory system
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