circulation
noun
cir·cu·la·tion
ˌsər-kyə-ˈlā-shən 
1
: orderly movement through a circuit
especially
: the movement of blood through the vessels of the body induced by the pumping action of the heart
2
: flow
3
a
: passage or transmission from person to person or place to place
especially
: the interchange of currency
coins in circulation
b
: the extent of dissemination: such as
(1)
: the average number of copies of a publication sold over a given period
(2)
: the total number of items borrowed from a library
Examples of circulation in a Sentence
He has bad circulation in his legs.
The drug improves blood circulation.
The attic has poor air circulation.
the circulation of ocean waters
Let's open the windows to get some circulation in here.
This memo is not meant for circulation.
The coins have recently entered circulation.
Recent Examples on the Web
The Normatec 3 Legs compression boots ($899) are used by professional athletes between games to improve circulation and reduce swelling.
—
Hanna Wickes, Kansas City Star, 15 June 2026
The pool, which was first installed in 1923, was previously renovated in 2012 to reengineer its circulation and filtration system, though the shallow water feature has been notoriously difficult to keep clean.
—Meredith Kile, PEOPLE, 15 June 2026
For deeper recovery, the $899 Normatec 3 Legs Compression Boots used by professional athletes between games fill with air and deflate in sequence to mimic muscle contractions, boost circulation and reduce swelling.
—Hanna Wickes, Miami Herald, 15 June 2026
This cooling shifts atmospheric circulation, influencing weather around the globe.
—Brandi D. Addison, USA Today, 15 June 2026
See All Example Sentences for circulation
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Hanna Wickes, Kansas City Star, 15 June 2026
The pool, which was first installed in 1923, was previously renovated in 2012 to reengineer its circulation and filtration system, though the shallow water feature has been notoriously difficult to keep clean.
—Meredith Kile, PEOPLE, 15 June 2026
For deeper recovery, the $899 Normatec 3 Legs Compression Boots used by professional athletes between games fill with air and deflate in sequence to mimic muscle contractions, boost circulation and reduce swelling.
—Hanna Wickes, Miami Herald, 15 June 2026
This cooling shifts atmospheric circulation, influencing weather around the globe.
—Brandi D. Addison, USA Today, 15 June 2026
See All Example Sentences for circulation
Cite this Entry
“Circulation.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/circulation. Accessed 17 Jun. 2026.
Copy CitationKids Definition
circulation
noun
cir·cu·la·tion
ˌsər-kyə-ˈlā-shən
1
: orderly movement through a circuit
especially
: the movement of blood through the vessels of the body caused by the pumping action of the heart
2
a
: passage from person to person or place to place
coins in circulation
b
: the average number of copies (as of a newspaper) sold over a given period
Medical Definition
circulation
noun
cir·cu·la·tion
ˌsər-kyə-ˈlā-shən
: the movement of blood through the vessels of the body that is induced by the pumping action of the heart and serves to distribute nutrients and oxygen to and remove waste products from all parts of the body see pulmonary circulation, systemic circulation
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