effusion
noun
effusion is spelled E-F-F-U-S-I-O-N: 8 letters. It appears about once in every 4 million words in written English, the 58,714th most frequent word form (wordfreq, 2021 data). As a noun, effusion means “A liquid outpouring” (English Wiktionary, September 2026). The plural of effusion is effusions.
How many letters and syllables are in effusion?
| Letters | 8: E-F-F-U-S-I-O-N |
|---|---|
| In writing | about once in every 4 million words; the 58,714th most frequent word form |
| Wrong spellings searched | none measured in search |
Sources: letters and syllables from the English Wiktionary's hyphenation or pronunciation; written frequency: wordfreq 3.1 (a 2021 snapshot of Wikipedia, subtitles, news, books, web text and social media).
How common is effusion?
Effusion appears about once in every 4 million words in written English, the 58,714th most frequent word form in the list.
Source: written frequency: wordfreq 3.1 (a 2021 snapshot of Wikipedia, subtitles, news, books, web text and social media).
How do you pronounce effusion?
- US
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract). Recordings: LL-Q1860_(eng)-Flame,_not_lame-effusion.wav, Wikimedia Commons (author and licence on each file's page).
Forms of effusion
- effusions plural
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
What does effusion mean?
The meanings the English Wiktionary records, quoted as written there (source below).
noun
- 1
A liquid outpouring.
- 2
Process of gases passing through a hole or holes considerably smaller than the mean free path of the gas molecules.
- 3
An outpouring of speech or emotion.
- 4
The seeping of fluid into a body cavity; the fluid itself.
pleural effusion
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
Effusion in Spanish, French, German and Portuguese
| Language | Words |
|---|---|
| French | effusion |
| German | Ausfluss, Erguss , Effusion , Ausbruch |
| Portuguese | efusão |
| Spanish | efusión , derrame |
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract). Translations are Wiktionary's, by sense; a linked word has its own PlainSpell page.
Where does effusion come from?
Borrowed from Middle French effusion, from Latin effūsiō (“outpouring”). Displaced native Old English āgotennes.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).