bloodstream

noun

blood·​stream ˈbləd-ˌstrēm How to pronounce bloodstream (audio)
1
: the flowing blood in a circulatory system
2
: a mainstream of power or vitality
introduce into the economic bloodstream a large amount of moneyHarper's

Examples of bloodstream in a Sentence

The drug is now entering the bloodstream.
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
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 See all Example Sentences for bloodstream 

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 How to pronounce bloodstream (audio)
: the flowing blood in a living thing with a circulatory system

Medical Definition

bloodstream

noun
blood·​stream -ˌstrēm How to pronounce bloodstream (audio)
: the flowing blood in a circulatory system

More from Merriam-Webster on bloodstream

Last Updated: - Updated example sentences
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!