protrusion

/pɹəˈtɹuːʒən/

//pɹəˈtɹuːʒən// noun

By · According to Wiktionary data (CC BY-SA) ·

"protrusion" is a 10-letter English headword indexed on PlainSpell.

The verdict

“protrusion” is uncommon English (frequency #54,413 among 46,516 “P” headwords), classed as a noun. The kind of spelling people second-guess.

#54,413
frequency rank, English
46,516
“P” headwords

According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - The act of protruding.

Key facts for protrusion
PropertyValue
Headwordprotrusion
LanguageEnglish
Part of speechNoun
IPA/pɹəˈtɹuːʒən/
Letters10
Frequency rank#54,413
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Where “protrusion” 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). protrusion lands here:

#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

protrusion is uncommon English at frequency #54,413 among 46,516 “P” headwords, classed as anoun, transcribed /pɹəˈtɹuːʒən/. Rarity is why readers land here mid-draft. 3 senses are on record.

No generated misspelling entries exist for protrusion in our index, and the word's spelling is regular enough that our generator found nothing worth flagging. Our dataset records no confusable match here, which usually means its spelling is distinct enough that readers don't reach for a similar-looking word instead.

Etymologically, the entry records: From French protrusion. The correct English form is protrusion, spelled P-R-O-T-R-U-S-I-O-N.

Definition

  1. 1
    The act of protruding.
  2. 2
    The state of being protruded.
  3. 3
    Anything that protrudes.

Etymology

From French protrusion.

Antonyms

indentation

This word in other languages

protubérance(Français)Herausragen(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 "protrusion"?
"protrusion" is spelled P-R-O-T-R-U-S-I-O-N. The IPA pronunciation is /pɹəˈtɹuːʒən/.
What does "protrusion" mean?
As a noun, "protrusion" means: The act of protruding.
How do you pronounce "protrusion"?
The IPA (International Phonetic Alphabet) transcription for "protrusion" is /pɹəˈtɹuːʒən/. Click the speaker icon on the pronunciation badge above to hear it spoken aloud where audio is available.
What is the origin of the word "protrusion"?
From French protrusion. 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 “protrusion”

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

  • The one correct English spelling is P-R-O-T-R-U-S-I-O-N - every other letter order is a misspelling in standard orthography.
  • Say it as /pɹəˈtɹuːʒən/ (IPA); tap the speaker on the pronunciation badge to hear it where audio exists.
  • 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.

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list FrequencyWords open word-frequency list