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

Leaky gut can also allow organisms that make up the intestinal microbiome—which are supposed to remain in the intestines—to migrate into the bloodstream and spread infection. —Jeffrey Kluger, Time, 20 May 2025

Therefore, any microbe that goes into your eyes could travel via the bloodstream to other parts of your body. —Bruce Y. Lee, Forbes.com, 14 May 2025

However, the stomach's digestive enzymes can eliminate curcumin from your bloodstream by metabolizing it before it is absorbed. —Anna Giorgi, Verywell Health, 8 May 2025

The pollutants impacting air quality are heavily influenced by temperature and wildfire activity and can penetrate deep into the lungs and even enter the bloodstream. —Anna Skinner, MSNBC Newsweek, 1 May 2025

Word History

First Known Use

13th century, in the meaning defined at sense 1

Rhymes for bloodstream

• abeam
• airstream
• daydream
• downstream
• esteem
• extreme
• grapheme
• hakim
• hornbeam
• lexeme
• mainstream
• midstream

Kids Definition

bloodstream

noun

blood·​stream -ˌstrēm 

: the flowing blood in a living thing with a circulatory system

Medical Definition

bloodstream

noun

blood·​stream -ˌstrēm 

: the flowing blood in a circulatory system