fasciculation
noun
fasciculation is a noun meaning “An involuntary muscle twitch, usually localised and temporary, but that may be intensified and prolonged fatally by particular poisons and venoms…” (English Wiktionary, September 2026). It is spelled F-A-S-C-I-C-U-L-A-T-I-O-N, and it appears about once in every 55 million words in written English (wordfreq, 2021 data). The plural of fasciculation is fasciculations.
What does fasciculation mean?
noun
- 1
An involuntary muscle twitch, usually localised and temporary, but that may be intensified and prolonged fatally by particular poisons and venoms such as acetylcholinesterase inhibitors.
- 2
A cluster of fascicles.
- 3
The process of becoming fasciculate, of growing together in clusters of fascicles.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
Forms of fasciculation
- fasciculations plural
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
How common is fasciculation?
Fasciculation appears about once in every 55 million words in written English, the 231,291st 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).
Fasciculation in Spanish, French, German and Portuguese
In the sense involuntary muscle twitch:
| Language | Words |
|---|---|
| French | fasciculation |
| German | Faszikulation |
| Portuguese | fasciculação |
| Spanish | fasciculación |
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.