retroperitoneum
noun
retroperitoneum is spelled R-E-T-R-O-P-E-R-I-T-O-N-E-U-M. The wrong spelling people search most is retroperitonium: about 20 Bing searches a month in the United States (September 2025 to August 2026), about 1 in 69 of all searches for the word. Retroperitoneum is a noun meaning “The space in the abdominal cavity behind the peritoneum”.
How many letters and syllables are in retroperitoneum?
| Letters | 15: R-E-T-R-O-P-E-R-I-T-O-N-E-U-M |
|---|---|
| In writing | about once in every 72 million words; the 269,040th most frequent word form |
| Wrong spellings searched | 1; the most searched, retroperitonium, about 20 Bing searches a month (all of them) |
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); Bing searches in the United States: the average month from September 2025 to August 2026 (Microsoft Advertising keyword data through DataForSEO, read September 30, 2026).
How do you spell retroperitoneum?
Retroperitoneum is spelled R-E-T-R-O-P-E-R-I-T-O-N-E-U-M. One wrong spelling is searched or written often enough to measure; together they are about 1 in 69 of the searches for retroperitoneum in either form.
Bing searches in the United States: the average month from September 2025 to August 2026 (Microsoft Advertising keyword data through DataForSEO, read September 30, 2026). Wrong spellings are taken from Wiktionary entries tagged "misspelling" and its obsolete or nonstandard forms, Wikipedia's Lists of common misspellings and the codespell dictionary, then measured. The proofreader's marks show the change that corrects each one.
How common is retroperitoneum?
Retroperitoneum appears about once in every 72 million words in written English, the 269,040th 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).
What does retroperitoneum mean?
The meanings the English Wiktionary records, quoted as written there (source below).
noun
- 1
The space in the abdominal cavity behind the peritoneum.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
Where does retroperitoneum come from?
From retro- + peritoneum.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).