Standard Lemma guide

effusion

noun · 6 senses · updated from the 2026-07-25 local source snapshot

Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.

Sound

Pronunciation

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  • US: Recorded audio is listed in the source snapshot.
  • rhymes with -uːʒən

1

noun

Meaning 1

A liquid outpouring.

Definition source: English Wiktionary via Wiktextract

Usage: countable, uncountable

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: infusion

2

noun

Meaning 2

Process of gases passing through a hole or holes considerably smaller than the mean free path of the gas molecules.

Definition source: English Wiktionary via Wiktextract

Usage: countable, uncountable

Topics: chemistry, natural-sciences, physical-sciences, physics

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

3

noun

Meaning 3

An outpouring of speech or emotion.

Definition source: English Wiktionary via Wiktextract

Usage: broadly, countable, figuratively, uncountable

Examples

  • 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 [...]

Meaning relationships

Synonyms: none provided

Antonyms: none provided

4

noun

Meaning 4

The seeping of fluid into a body cavity; the fluid itself.

Definition source: English Wiktionary via Wiktextract

Usage: countable, uncountable

Topics: medicine, sciences

Examples

  • pleural effusion

Meaning relationships

Synonyms: none provided

Antonyms: none provided

5

noun

Meaning 5

flow under pressure

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

Broader terms: flood, overflow, outpouring

6

noun

Meaning 6

an unrestrained expression of emotion

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: gush, outburst, blowup, ebullition

Antonyms: none provided

Broader terms: expression, manifestation, reflection, reflexion

Narrower terms: acting out, cry, explosion, flare

History

Etymology

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

Across languages

Translations

58 source translations are retained for this English entry.

  • Arabic: اِنْدِفَاق (indifāq) — outpouring of liquid
  • Arabic: اِنْصِبَاب (inṣibāb) — outpouring of liquid
  • Bulgarian: изливане (izlivane) — outpouring of liquid
  • Bulgarian: изтичане (iztičane) — outpouring of liquid
  • Catalan: efusió — outpouring of liquid
  • Chinese Mandarin: 外溢 (wàiyì) — outpouring of liquid
  • Chinese Mandarin: 流出 (liúchū) — outpouring of liquid
  • Chinese Mandarin: 滲出液 /渗出液 (shènchūyè) — outpouring of liquid
  • Czech: výlev — outpouring of liquid
  • Czech: výtok — outpouring of liquid
  • Dutch: uitstorting — outpouring of liquid
  • Finnish: valuminen — outpouring of liquid
  • Finnish: effuusio — outpouring of liquid
  • French: effusion — outpouring of liquid
  • Georgian: ეფუზია (epuzia) — outpouring of liquid
  • German: Ausfluss — outpouring of liquid
  • German: Erguss — outpouring of liquid
  • Italian: effusione — outpouring of liquid
  • Italian: spargimento — outpouring of liquid
  • Italian: travaso — outpouring of liquid
  • Latin: effūsiō — outpouring of liquid
  • Portuguese: efusão — outpouring of liquid
  • Slovak: výlev — outpouring of liquid
  • Slovak: výtok — outpouring of liquid
  • Spanish: efusión — outpouring of liquid
  • Tagalog: panlalagos — outpouring of liquid
  • Turkish: efüzyon — outpouring of liquid
  • Arabic: تَدَفُّق (tadaffuq) — chemistry, physics: process
  • Chinese Mandarin: 逸散 — chemistry, physics: process
  • Czech: efuze — chemistry, physics: process
  • Finnish: effuusio — chemistry, physics: process
  • French: effusion — chemistry, physics: process
  • German: Effusion — chemistry, physics: process
  • Indonesian: efusi — chemistry, physics: process
  • Catalan: efusió — outpouring of speech or emotion
  • Chinese Mandarin: 滔滔不絕的言辭 /滔滔不绝的言辞 (tāotāobùjué de yáncí) — outpouring of speech or emotion
  • Czech: (citový) výlev — outpouring of speech or emotion
  • Finnish: vuodatus — outpouring of speech or emotion
  • French: effusion — outpouring of speech or emotion
  • German: Erguss — outpouring of speech or emotion
  • German: Ausbruch — outpouring of speech or emotion
  • Italian: effusione — outpouring of speech or emotion
  • Italian: effusioni — outpouring of speech or emotion
  • Portuguese: efusão — outpouring of speech or emotion
  • Slovak: výlev — outpouring of speech or emotion
  • Spanish: efusión — outpouring of speech or emotion
  • Chinese Mandarin: 滲出 /渗出 (shènchū) — seeping of fluid into a body cavity
  • Chinese Mandarin: 滲液 /渗液 (shènyè) — seeping of fluid into a body cavity
  • Chinese Mandarin: 積液 /积液 (jīyè) — seeping of fluid into a body cavity
  • Czech: výron — seeping of fluid into a body cavity
  • Czech: výtok — seeping of fluid into a body cavity
  • Finnish: effuusio — seeping of fluid into a body cavity
  • French: effusion — seeping of fluid into a body cavity
  • German: Erguss — seeping of fluid into a body cavity
  • Indonesian: efusi — seeping of fluid into a body cavity
  • Italian: effusione — seeping of fluid into a body cavity
  • Portuguese: efusão — seeping of fluid into a body cavity
  • Spanish: derrame — seeping of fluid into a body cavity