subarachnoid
/ˌsʌb.əˈɹæk.nɔɪd/adjective, noun
subarachnoid is spelled S-U-B-A-R-A-C-H-N-O-I-D: 12 letters. It appears about once in every 6 million words in written English, the 73,203rd most frequent word form (wordfreq, 2021 data). As an adjective, subarachnoid means “Located or occurring below the arachnoid mater, often specifically between the arachnoid membrane and the pia mater” (English Wiktionary, September 2026).
How many letters and syllables are in subarachnoid?
| Letters | 12: S-U-B-A-R-A-C-H-N-O-I-D |
|---|---|
| In writing | about once in every 6 million words; the 73,203rd 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 subarachnoid?
Subarachnoid appears about once in every 6 million words in written English, the 73,203rd 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 subarachnoid?
- /ˌsʌb.əˈɹæk.nɔɪd/
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
Forms of subarachnoid
- subarachnoids plural
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
What does subarachnoid mean?
The meanings the English Wiktionary records, quoted as written there (source below).
adjective
- 1
Located or occurring below the arachnoid mater, often specifically between the arachnoid membrane and the pia mater.
noun
- 1
Ellipsis of subarachnoid space.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
Subarachnoid in Spanish, French, German and Portuguese
In the sense below the arachnoid mater:
| Language | Words |
|---|---|
| Spanish | subaracnoideo |
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 subarachnoid come from?
From sub- + arachnoid.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).