effusion

[ih-fyoo-zhuhn]

noun

1. the act of effusing or pouring forth.

2. something that is effused.

3. an unrestrained expression, as of feelings.

   poetic effusions.

4. Pathology.

   1. the escape of a fluid from its natural vessels into a body cavity.

   2. the fluid that escapes.

5. Physics.,  the flow of a gas through a small orifice at such density that the mean distance between the molecules is large compared with the diameter of the orifice.

effusion

/ ɪˈfjuːʒən /

noun

1. an unrestrained outpouring in speech or words

2. the act or process of being poured out

3. something that is poured out

4. the flow of a gas through a small aperture under pressure, esp when the density is such that the mean distance between molecules is large compared to the diameter of the aperture

5. med

   1. the escape of blood or other fluid into a body cavity or tissue

   2. the fluid that has escaped

Other Word Forms

• noneffusion noun

Word History and Origins

Origin of effusion¹

1350–1400; Middle English (< Anglo-French ) < Latin effūsiōn- (stem of effūsiō ), equivalent to ef- ef- + fūsion- fusion

Example Sentences

In 2019, he underwent surgery for pericardial effusion - a condition affecting the heart.

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As one of “Tracks II”’s standout albums, “Faithless” finds Springsteen engaging in a series of spiritual effusions, including the LP’s exquisite title track.

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As warm spring weather and effusions of greenery spread across our disordered continent, Americans are understandably mesmerized by the widening chaos, unresolved conflict and bottomless corruption of Donald Trump’s second presidency.

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However, setbacks and pain have persisted, and the effusion, a collection of fluid around the joint also known as water on the knee, have pushed the target back.

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AOM is often confused with otitis media with effusion, or fluid behind the ear, a condition that generally does not involve bacteria and does not benefit from antimicrobial treatment.

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