peritonitis

Name: peritonitis, English Word Data
Creator: Wiktionary
License: https://creativecommons.org/licenses/by-sa/4.0/

noun

By PlainSpell · According to Wiktionary data (CC BY-SA) · analyzed May 6, 2026

The verdict

“peritonitis” is uncommon English (frequency #63,885 among 46,516 “P” headwords), classed as a noun. The kind of spelling people second-guess.

#63,885
frequency rank, English: 46,516
“P” headwords

According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - Inflammation of the peritoneum, especially when caused by an infectious organism introduced into the abdominal cavity.

Key facts for peritonitis
Property	Value
Headword	peritonitis
Language	English
Part of speech	Noun
Letters	11
Frequency rank	#63,885
Misspellings tracked	0
Confusable pairs	0
Source	Wiktionary (kaikki.org)

Where “peritonitis” sits in English frequency

Every-word frequency runs from the handful of words we use constantly (left) to the long tail used once in a blue moon (right). peritonitis lands here:

#63,885

#1#100#1K#10K#100K

← used constantlyrarely used →

Scale is logarithmic (each tick is 10× rarer). Source: FrequencyWords open word-frequency list.

Rare enough to double-check

peritonitis is uncommon English at frequency #63,885 among 46,516 “P” headwords, classed as anoun. Rarity is why readers land here mid-draft. Gloss: "Inflammation of the peritoneum, especially when caused by an infectious organism introduced into the abdominal cavity.".

No generated misspelling entries exist for peritonitis in our index, typically a sign the spelling maps closely to how the word sounds. Our confusable-pair dataset has no match for it, since no other headword is close enough in sound or shape to pair with it.

Etymologically, the entry records: From peritoneum + -itis. The correct English form is peritonitis, spelled P-E-R-I-T-O-N-I-T-I-S.

Definition

1
Inflammation of the peritoneum, especially when caused by an infectious organism introduced into the abdominal cavity.

Etymology

From peritoneum + -itis.

This word in other languages

peritonitis(Español)péritonite(Français)Bauchfellentzündung(Deutsch)

Definitions, pronunciation, and etymology for this entry are drawn from Wiktionary via the kaikki.org structured extract (CC BY-SA); frequency ordering uses the FrequencyWords open word-frequency list (2018 English corpus, MIT). See the methodology for how each field is sourced and updated.

Frequently Asked Questions

How do you spell "peritonitis"?

"peritonitis" is spelled P-E-R-I-T-O-N-I-T-I-S.

What does "peritonitis" mean?

As a noun, "peritonitis" means: Inflammation of the peritoneum, especially when caused by an infectious organism introduced into the abdominal cavity.

What is the origin of the word "peritonitis"?

From peritoneum + -itis. See the full etymology section above for more details.

Is PlainSpell free to use?

Yes, PlainSpell is a completely free word reference. You can look up definitions, pronunciations, confusable pairs, homophones, and spelling corrections across 5 languages without any sign-up or subscription.

Using “peritonitis”

The practical upshot for anyone who landed here from a spell-check.

The one correct English spelling is P-E-R-I-T-O-N-I-T-I-S - every other letter order is a misspelling in standard orthography.
Browse more English words and confusable pairs in the same reference. English words

Other uncommon English words near this rank

Data Source

Wiktionary (via kaikki.org), licensed under CC BY-SA & GFDL. Word ordering uses an open word-frequency list; misspelling variants are generated by edit-distance from the correct headword.