sulcus
sul·cus/ˈsʌl.kəs/noun
sulcus is spelled S-U-L-C-U-S: 6 letters and 2 syllables (sul·cus). It appears about once in every 5 million words in written English, the 66,686th most frequent word form (wordfreq, 2021 data). As a noun, sulcus means “A furrow or groove in an organ or a tissue, especially that marking the convolutions of the surface of the brain” (English Wiktionary, September 2026). The plural of sulcus is sulci.
How many letters and syllables are in sulcus?
| Letters | 6: S-U-L-C-U-S |
|---|---|
| Syllables | 2: sul·cus |
| In writing | about once in every 5 million words; the 66,686th 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 sulcus?
Sulcus appears about once in every 5 million words in written English, the 66,686th 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 sulcus?
- /ˈsʌl.kəs/
Sulcus has 2 syllables, split sul·cus in writing.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract). Recordings: LL-Q1860_(eng)-Vealhurl-sulcus.wav, Wikimedia Commons (author and licence on each file's page).
Forms of sulcus
- sulci plural
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
What does sulcus mean?
The meanings the English Wiktionary records, quoted as written there (source below).
noun
- 1
A furrow or groove in an organ or a tissue, especially that marking the convolutions of the surface of the brain.
The sulci and gyri are the grooves and ridges, respectively.
- 2
A region of subparallel grooves or ditches formed by a geological process.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
Sulcus in Spanish, French, German and Portuguese
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 sulcus come from?
Borrowed from Latin sulcus (“a furrow made by a plow”). Doublet of sullow ("plough").
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).