mucin

/ˈmjuːsɪn/

//ˈmjuːsɪn// noun

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

"mucin" is a 5-letter English headword indexed on PlainSpell.

The verdict

“mucin” is uncommon English (frequency #91,828 among 36,575 “M” headwords), classed as a noun. The kind of spelling people second-guess.

#91,828
frequency rank, English
36,575
“M” headwords

According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - Any of several glycoproteins found in mucus

Key facts for mucin
PropertyValue
Headwordmucin
LanguageEnglish
Part of speechNoun
IPA/ˈmjuːsɪn/
Letters5
Frequency rank#91,828
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Where “mucin” 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). mucin 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

mucin is uncommon English at frequency #91,828 among 36,575 “M” headwords, classed as anoun, transcribed /ˈmjuːsɪn/. Rarity is why readers land here mid-draft. Gloss: "Any of several glycoproteins found in mucus".

The misspelling generator found no plausible variants for mucin, which points to an orthography that plays by predictable English rules. This headword has no recorded confusable partner, since no other headword is close enough in sound or shape to pair with it.

Etymologically, the entry records: From muc- + -in. The correct English form is mucin, spelled M-U-C-I-N.

Definition

  1. 1
    Any of several glycoproteins found in mucus

Etymology

From muc- + -in.

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 "mucin"?
"mucin" is spelled M-U-C-I-N. The IPA pronunciation is /ˈmjuːsɪn/.
What does "mucin" mean?
As a noun, "mucin" means: Any of several glycoproteins found in mucus
How do you pronounce "mucin"?
The IPA (International Phonetic Alphabet) transcription for "mucin" is /ˈmjuːsɪn/. 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 "mucin"?
From muc- + -in. 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 “mucin”

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

  • The one correct English spelling is M-U-C-I-N - every other letter order is a misspelling in standard orthography.
  • Say it as /ˈmjuːsɪn/ (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