concussion
/kənˈkʌʃən/noun
concussion is spelled C-O-N-C-U-S-S-I-O-N: 10 letters and 3 syllables. It appears 3.6 times per million words in written English, the 13,695th most frequent word form (wordfreq, 2021 data). As a noun, concussion means “An injury to part of the body, most especially the brain, caused by a violent blow, followed by loss of function” (English Wiktionary, September 2026). The plural of concussion is concussions.
How many letters and syllables are in concussion?
| Letters | 10: C-O-N-C-U-S-S-I-O-N |
|---|---|
| Syllables | 3 (from its American pronunciation) |
| In writing | 3.6 times per million words; the 13,695th most frequent word form |
| Wrong spellings searched | none measured in search |
Sources: letters and syllables from the English Wiktionary's hyphenation or pronunciation and the CMU Pronouncing Dictionary; written frequency: wordfreq 3.1 (a 2021 snapshot of Wikipedia, subtitles, news, books, web text and social media).
How common is concussion?
Concussion appears 3.6 times per million words in written English, the 13,695th 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 concussion?
- UK /kənˈkʌʃən/
- /kənˈkʊʃən/
- /ˈkɒnˈkʊʃən/
Concussion has 3 syllables (counted from its American pronunciation in the CMU Pronouncing Dictionary).
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract). Recordings: En-us-concussion.ogg, Wikimedia Commons (author and licence on each file's page).
Forms of concussion
- concussions plural
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
What does concussion mean?
The meanings the English Wiktionary records, quoted as written there (source below).
noun
- 1
obsoleteA violent collision or shock.
- 2
USAn injury to part of the body, most especially the brain, caused by a violent blow, followed by loss of function.
- 3
obsoleteThe unlawful forcing of another by threats of violence to yield up something of value.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
Concussion in Spanish, French, German and Portuguese
| Language | Words |
|---|---|
| French | choc , commotion, commotion cérébrale |
| Spanish | choque , conmoción cerebral, concusión |
| German | Gehirnerschütterung, Erschütterung, Stoßverletzung, Konkussion |
| Portuguese | concussão |
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 concussion come from?
From Latin concussiō. Equivalent to concuss + -ion.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).