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 Words From

• nonef·fusion 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

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.

From Science Daily

The Lakers shut down Cam Reddish for more than a week, hoping the time off would speed up his recovery from a left knee effusion injury.

From Los Angeles Times

Russians swing for the fence, loving the sweeping effusions of Tchaikovsky and the dissonant drama of Shostakovich.

From Seattle Times

Will the weird, jagged, irregular effusions of language gradually be purged?

From Los Angeles Times

There are hazy effusions of brass; little thickets of rattling, shivering percussion; and whooshing, glistening strings that were a textural link to the Ives, as well as to Stravinsky’s “Petrushka,” which came after intermission.

From New York Times