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

"In AOM, the ear drum bulges like a bagel, leaving a central area of depression that resembles a bagel hole. In contrast, in children with otitis media with effusion, no bulging of the tympanic membrane is present."

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

Some at Asbury said they preferred the term “outpouring,” as in an almost tangible effusion of the Holy Spirit.

From New York Times

“HVO does not see any indication of activity migrating elsewhere on Kilauea volcano and expects the eruption to remain confined to the summit region … initial high effusion rates are declining, and no infrastructure is threatened … there is currently no threat of significant volcanic ash emission into the atmosphere outside of the hazardous closed area within Hawai‘i Volcanoes National Park,” HVO wrote in a Friday update.

From Washington Times