bloodstream

American  

[bluhd-streem] / ˈblʌdˌstrim /

noun

1. the blood flowing through a circulatory system.

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bloodstream British  

/ ˈblʌdˌstriːm /

noun

1. the flow of blood through the vessels of a living body

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Etymology

Origin of bloodstream

First recorded in 1870–75; blood + stream

Example Sentences

See Examples For:

bloodstream

The center cited her “packed cell volume” — which measures the percentage of red blood cells in her bloodstream — as one of the most hopeful signs.

From Los Angeles Times ● Jul. 28, 2026

But plaque can shed bacteria or bacterial products into the bloodstream, says Dr. George Hajishengallis, a professor at the University of Pennsylvania’s dental school specializing in microbiology and immunology.

From The Wall Street Journal ● Jul. 26, 2026

Once that protective barrier is compromised, harmful microbial products can enter the bloodstream, reach the liver, and trigger inflammatory immune responses, including excessive activation of CD8+ T cells.

From Science Daily ● Jul. 11, 2026

At that altitude, the Earth's barometric pressure is lower, making the air thinner and meaning less oxygen is taken into the bloodstream with each breath.

From BBC ● Jul. 2, 2026

I clench my teeth thru it but then the medicine starts to work and a flush of cool flows into my bloodstream.

From "The Knife of Never Letting Go" by Patrick Ness