corrin
"corrin" is a 6-letter English headword indexed on PlainSpell.
The verdict
“corrin” is uncommon English (frequency #73,989 among 5,599 “C” headwords), classed as a noun. The kind of spelling people second-guess.
- #73,989
- frequency rank, English
- 5,599
- “C” headwords
According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - A molecular species that contains four reduced pyrrole rings joined in a macrocycle by three -CH= groups and one direct bond; central to the cobalt-containing vitamin cobalamin.
Corpus desk
Index EN-corrin · corrin · English
corrin · rank #73,989 · 0 variants · 0 confusables
- FREQ-RARE #73,989
- LEN-LONG 6 letters
- VOW-2 2 vowels
- CONFUS-0 No pairs
- VAR-0 0 variants
- BOOK-DENSE 5,599
- PHOTO-FINISH Cortlandt
Nearest frequency peer: Cortlandt (+1 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 “corrin”
Sparse band: bars invert rank so rarer forms read shorter
- cordy
cordy
26,016 corpus weight
- cornhole
cornhole
26,015 corpus weight
- corrin
corrin
26,012 corpus weight
- Cortlandt
Cortlandt
26,011 corpus weight
- cott
cott
26,008 corpus weight
- counterclaim
counterclaim
26,007 corpus weight
What this shows Long-tail view: where “corrin” sits against similarly uncommon English ranks.
| Property | Value |
|---|---|
| Headword | corrin |
| Language | English |
| Part of speech | Noun |
| Letters | 6 |
| Frequency rank | #73,989 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Long-tail rank of “corrin” in English
Rare enough to double-check
corrin is uncommon English at frequency #73,989 among 5,599 “C” headwords, classed as anoun. Rarity is why readers land here mid-draft. Gloss: "A molecular species that contains four reduced pyrrole rings joined in a macrocycle by three -CH= groups and one direct bond; central to the cobalt-containing vitamin cobalamin.".
No misspelling variants are generated for corrin in our index, since its letter sequence doesn't invite the usual edit-distance slips. It is not paired with a close-neighbour confusable in our dataset, since nothing in our dataset looks or sounds close enough to cause mix-ups.
No borrowing history is documented for this entry, so its spelling pattern is best understood through pronunciation rather than a traceable origin. The correct English form is corrin, spelled C-O-R-R-I-N.
Definition
- 1A molecular species that contains four reduced pyrrole rings joined in a macrocycle by three -CH= groups and one direct bond; central to the cobalt-containing vitamin cobalamin.
Recorded use
Wiktionary exampleThese source excerpts show how corrin appears in context. They illustrate usage; the definition above remains the entry’s reference meaning.
But the result showed unequivocally that the vitamin contained a ring system unlike any that had been seen before (it was later given the name ‘corrin’).
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 "corrin", not the corpus desk frequency band.
Same letter count
Frequency-ranked English headwords with 6 letters (nearest by frequency rank).