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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
When someone consumes silver particles, the metal moves from the gut into the bloodstream in its ionic form.
—Ars Technica, 10 Jan. 2025
Wildfire smoke contains many pollutants, including tiny particles that can get into your lungs and even your bloodstream, says Sara Adar, a professor of epidemiology and global public health at the University of Michigan School of Public Health.
—Chantelle Lee, TIME, 9 Jan. 2025
In an extreme situation like this one, the gut bacteria start to break down, and endotoxins—the toxins that come from inside bacterial cells—enter the bloodstream, leading to inflammation and other problems, explains Fedirko.
—Betsy Andrews, Saveur, 9 Jan. 2025
The tiniest particles in smoke can travel deep into your lungs or even enter your bloodstream.
—Karen Kaplan, Los Angeles Times, 8 Jan. 2025
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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 15 Jan. 2025.
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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