tubulin
"tubulin" is a 7-letter English headword indexed on PlainSpell.
The verdict
“tubulin” is uncommon English (frequency #75,511 among 3,151 “T” headwords), classed as a noun. The kind of spelling people second-guess.
- #75,511
- frequency rank, English
- 3,151
- “T” headwords
According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - Any of a group of proteins used as the material for microtubules.
Corpus desk
Index EN-tubulin · tubulin · English
tubulin · rank #75,511 · 0 variants · 0 confusables
- FREQ-RARE #75,511
- LEN-LONG 7 letters
- VOW-3 3 vowels
- CONFUS-0 No pairs
- VAR-0 0 variants
- BOOK-MID 3,151
- PHOTO-FINISH trooping
Nearest frequency peer: trooping (-2 rank slots)
Read with this headword: Spelling guide for this pattern
Desk codes from Wiktionary headword shape, FrequencyWords rank tier, confusable-pair count, generated misspelling depth, letter-cohort book size, and photo-finish peer. Not a difficulty grade.
Long-tail ranks near “tubulin”
Sparse band: bars invert rank so rarer forms read shorter
- transbounda…
transboundary
24,499 corpus weight
- transcranial
transcranial
24,498 corpus weight
- tripper
tripper
24,493 corpus weight
- trooping
trooping
24,492 corpus weight
- tubulin
tubulin
24,490 corpus weight
- Tuohy
Tuohy
24,488 corpus weight
What this shows Long-tail view: where “tubulin” sits against similarly uncommon English ranks.
| Property | Value |
|---|---|
| Headword | tubulin |
| Language | English |
| Part of speech | Noun |
| Letters | 7 |
| Frequency rank | #75,511 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Long-tail rank of “tubulin” in English
Rare enough to double-check
tubulin is uncommon English at frequency #75,511 among 3,151 “T” headwords, classed as anoun. Rarity is why readers land here mid-draft. 2 senses are on record.
No misspelling variants are generated for tubulin in our index, suggesting the orthography follows predictable English patterns. No confusable counterpart is on file for this word, since no other headword is close enough in sound or shape to pair with it.
Etymologically, the entry records: From tubul- + -in. The correct English form is tubulin, spelled T-U-B-U-L-I-N.
Definition
- 1Any of a group of proteins used as the material for microtubules.
- 2Specifically, the dimer of α-tubulin and β-tubulin.
Recorded use
Wiktionary exampleThese source excerpts show how tubulin appears in context. They illustrate usage; the definition above remains the entry’s reference meaning.
The protein tubulin is composed of dimers of 110000 to 120000 daltons.
Etymology
From tubul- + -in.
This word in other languages
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
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Similar English words by spelling shape
Same letter count and similar misspelling depth for "tubulin", not the corpus desk frequency band.
Same letter count
Frequency-ranked English headwords with 7 letters (nearest by frequency rank).