effusion
noun
ef·fu·sion
i-ˈfyü-zhən 
e-
1
: an act of effusing
2
: unrestrained expression of words or feelings
greeted her with great effusion—
Olive H. Prouty
Olive H. Prouty3
a(1)
: the escape of a fluid from anatomical vessels by rupture or exudation
(2)
: the flow of a gas through an aperture whose diameter is small as compared with the distance between the molecules of the gas
b
: the fluid that escapes
Examples of effusion in a Sentence
Her poetic effusions became tiresome.
Recent Examples on the Web
Pleural effusion: The tissue that lines the chest cavity and surrounds the lungs can become diseased or inflamed, causing the lungs to fill with fluid.
—Mark Gurarie, Verywell Health, 30 Oct. 2024
Schröder had been dealing with right Achilles soreness, Smith with right hip synovitis and Finney-Smith with a left knee effusion.
—C.j. Holmes, New York Daily News, 12 Apr. 2024
His great achievement, and Moses’s and Neugebauer’s, lies in the fact that such an effusion — hardly the only one in The Ally — feels not only truthful but real, earned and human, an expression not of writerly grandiosity but of character need.
—Sara Holdren, Vulture, 28 Feb. 2024
Reddish played just two games before suffering the ankle injury after missing three consecutive games because of left knee effusion (swelling).
—Khobi Price, Orange County Register, 26 Jan. 2024
See all Example Sentences for effusion 
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Mark Gurarie, Verywell Health, 30 Oct. 2024
Schröder had been dealing with right Achilles soreness, Smith with right hip synovitis and Finney-Smith with a left knee effusion.
—C.j. Holmes, New York Daily News, 12 Apr. 2024
His great achievement, and Moses’s and Neugebauer’s, lies in the fact that such an effusion — hardly the only one in The Ally — feels not only truthful but real, earned and human, an expression not of writerly grandiosity but of character need.
—Sara Holdren, Vulture, 28 Feb. 2024
Reddish played just two games before suffering the ankle injury after missing three consecutive games because of left knee effusion (swelling).
—Khobi Price, Orange County Register, 26 Jan. 2024
See all Example Sentences for effusion
Cite this Entry
“Effusion.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/effusion. Accessed 22 Nov. 2024.
Copy CitationKids Definition
effusion
noun
ef·fu·sion
i-ˈfyü-zhən
e-
1
: free expression of words or feelings
2
a
: escape of a fluid from containing vessels
b
: the fluid that escapes
Medical Definition
effusion
noun
ef·fu·sion
i-ˈfyü-zhən, e-
1
a
: the escape of a fluid from anatomical vessels by rupture or exudation
b
: the flow of a gas through an aperture whose diameter is small as compared with the distance between the molecules of the gas
2
: the fluid that escapes by extravasation see pleural effusion
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