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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
Examples of bloodstream in a Sentence
The drug is now entering the bloodstream.
Recent Examples on the Web
While air quality is expected to improve slightly as winds increase through the end of the week, PM10 and PM2.5 — particulate matter fine enough to be inhaled into the lungs and enter the bloodstream — are forecast to increase over the weekend as residents light fireplaces and fire pits.
—Hayleigh Evans, The Arizona Republic, 11 Dec. 2024
Of those, 31 had lymphoma, which the researchers say is not surprising as the blood cancer is more common in this age group than many other types, albeit still rare, and may be more likely to release DNA into the bloodstream because of its location.
—Byjennifer Couzin-Frankel, science.org, 4 Dec. 2024
The Long-Term Benefits for Children With Higher Oxytocin Levels
Oxytocin, produced in the hypothalamus—a part of the brain that controls many bodily functions—is released into the bloodstream by the pituitary gland.
—Mark R. Weaver, Newsweek, 3 Dec. 2024
But while bronchitis is an infection of the bronchial tubes, which carry air into the lungs, pneumonia is an infection in the alveoli, the air sacs where oxygen passes into the bloodstream.
—Kristina Herndon, Verywell Health, 30 Oct. 2024
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Word History
First Known Use
13th century, in the meaning defined at sense 1
Time Traveler
The first known use of bloodstream was
in the 13th century
Dictionary Entries Near bloodstream
Cite this Entry
“Bloodstream.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/bloodstream. Accessed 22 Dec. 2024.
Kids Definition
bloodstream
noun
blood·stream
-ˌstrēm
: the flowing blood in a living thing with a circulatory system
More from Merriam-Webster on bloodstream
Nglish: Translation of bloodstream for Spanish Speakers
Britannica English: Translation of bloodstream for Arabic Speakers
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