effusion.
A liquid outpouring.
Meaning & usage
A liquid outpouring.
Process of gases passing through a hole or holes considerably smaller than the mean free path of the gas molecules.
An outpouring of speech or emotion.
The seeping of fluid into a body cavity; the fluid itself.
pleural effusion
Where this word comes from
Borrowed from Middle French effusion, from Latin effūsiō (“outpouring”). Displaced native Old English āgotennes.
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Definitions, grammatical labels, IPA, etymology and examples: Wiktionary contributors, extracted by Kaikki / Wiktextract. Adapted under CC BY-SA 4.0. Selected fields and authored examples are shown; third-party quotations and audio are omitted. See contributor history.
Last enriched 2026-09-10. Definitions are in English. Romanizations are shown when supplied by the source; syllable estimates are omitted for unsupported scripts.