effusion

noun
ef·​fu·​sion | \ i-ˈfyü-zhən How to pronounce effusion (audio) , e- \

Definition of effusion

1 : an act of effusing
2 : unrestrained expression of words or feelings greeted her with great effusion— Olive H. Prouty
3a(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 Shoppers will also notice an effusion of labradorite and diamonds throughout the collection. Halie Lesavage, Harper's BAZAAR, 16 Sep. 2021 The effusion was slow at first; no one was threatened. Robin George Andrews, Wired, 6 June 2021 The effusion was slow at first; no one was threatened. Robin George Andrews, Wired, 6 June 2021 The effusion was slow at first; no one was threatened. Robin George Andrews, Wired, 6 June 2021 This ebullience of this aubade-style effusion is entirely new. Gregory Dowling, WSJ, 16 July 2021 The effusion was slow at first; no one was threatened. Robin George Andrews, Wired, 6 June 2021 The effusion was slow at first; no one was threatened. Robin George Andrews, Wired, 6 June 2021 The effusion was slow at first; no one was threatened. Robin George Andrews, Wired, 6 June 2021

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'effusion.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of effusion

15th century, in the meaning defined at sense 1

History and Etymology for effusion

Middle English effusioun "emission, shedding," borrowed from Anglo-French effusiun, borrowed from Latin effūsiōn-, effūsiō, from effud-, variant stem of effundere "to pour out, discharge, expend" + -tiōn-, -tiō, suffix of action nouns — more at effuse entry 1

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The first known use of effusion was in the 15th century

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Dictionary Entries Near effusion

effusiometer

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Last Updated

19 Sep 2021

Cite this Entry

“Effusion.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/effusion. Accessed 23 Oct. 2021.

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More Definitions for effusion

effusion

noun

English Language Learners Definition of effusion

: something that is said or expressed too much or with a lot of emotion
: a flow of liquid or gas

effusion

noun
ef·​fu·​sion | \ i-ˈfyü-zhən, e- How to pronounce effusion (audio) \

Medical Definition of effusion

1a : 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

More from Merriam-Webster on effusion

Nglish: Translation of effusion for Spanish Speakers

Britannica English: Translation of effusion for Arabic Speakers

Britannica.com: Encyclopedia article about effusion

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