Effusion

noun

noun ·Moderate ·College level

Definitions

Noun
  1. 1
    A liquid outpouring. countable, uncountable
  2. 2
    flow under pressure wordnet
  3. 3
    Process of gases passing through a hole or holes considerably smaller than the mean free path of the gas molecules. countable, uncountable
  4. 4
    an unrestrained expression of emotion wordnet
  5. 5
    An outpouring of speech or emotion. broadly, countable, figuratively, uncountable

    "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 […]"

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  1. 6
    The seeping of fluid into a body cavity; the fluid itself. countable, uncountable

    "pleural effusion"

Synonyms

All synonyms
abundanceamplitudebig mouthblowupcandordefluxion

Example

More examples

"At the door of the house we were met by a tall, white-faced, flaxen-haired man, with a notebook in his hand, who rushed forward and wrung my companion's hand with effusion."

Etymology

Borrowed from Middle French effusion, from Latin effūsiō (“outpouring”). Displaced native Old English āgotennes.

Related phrases

choroidal effusionmean free path

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.