Definition of "effusion" in Englisch

noun

1. A liquid outpouring.

2. (chemistry, physics) Process of gases passing through a hole or holes considerably smaller than the mean free path of the gas molecules.

3. (figurative, by extension) An outpouring of speech or emotion.

   • 1930; George S. Kaufman, Morrie Ryskind, Bert Kalmar, Harry Ruby; Animal Crackers, Paramount Pictures Captain Spaulding: My friends, I am highly gratified by this magnificent display of effusion […]

4. (medicine) The seeping of fluid into a body cavity; the fluid itself.

   • pleural effusion