renin
/ˈɹiː.nɪn/
"renin" is a 5-letter English headword indexed on PlainSpell.
The verdict
“renin” is uncommon English (frequency #85,700 among 3,094 “R” headwords), classed as a noun. The kind of spelling people second-guess.
- #85,700
- frequency rank, English
- 3,094
- “R” headwords
According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - A circulating enzyme released by mammalian kidneys that converts angiotensinogen to angiotensin I. Due to its activity which ultimately leads to the formation of angiotensin II and aldosterone, thi...
Corpus desk
Index EN-renin · renin · English
renin · rank #85,700 · 0 variants · 0 confusables
- FREQ-RARE #85,700
- LEN-MID 5 letters
- VOW-2 2 vowels
- CONFUS-0 No pairs
- VAR-0 0 variants
- BOOK-MID 3,094
- PHOTO-FINISH replicable
Nearest frequency peer: replicable (+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 “renin”
Sparse band: bars invert rank so rarer forms read shorter
- reanimate
reanimate
14,308 corpus weight
- reawakened
reawakened
14,306 corpus weight
- Recht
Recht
14,305 corpus weight
- renin
renin
14,301 corpus weight
- replicable
replicable
14,299 corpus weight
- reshoot
reshoot
14,295 corpus weight
What this shows Long-tail view: where “renin” sits against similarly uncommon English ranks.
| Property | Value |
|---|---|
| Headword | renin |
| Language | English |
| Part of speech | Noun |
| IPA | /ˈɹiː.nɪn/ |
| Letters | 5 |
| Frequency rank | #85,700 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Long-tail rank of “renin” in English
Rare enough to double-check
renin is uncommon English at frequency #85,700 among 3,094 “R” headwords, classed as anoun, transcribed /ˈɹiː.nɪn/. Rarity is why readers land here mid-draft. Gloss: "A circulating enzyme released by mammalian kidneys that converts angiotensinogen to angiotensin I. Due to its activity which ultimately leads to the formation of angiotensin II and aldosterone, thi...".
Our edit-distance generator produced no likely misspellings for renin, which points to an orthography that plays by predictable English rules. This entry stands alone in our confusable dataset, which tends to mean the word is visually distinctive enough to stand on its own.
Etymologically, the entry records: From reno- + -in. The correct English form is renin, spelled R-E-N-I-N.
Definition
- 1A circulating enzyme released by mammalian kidneys that converts angiotensinogen to angiotensin I. Due to its activity which ultimately leads to the formation of angiotensin II and aldosterone, this hormone plays a role in maintaining blood pressure.
Etymology
From reno- + -in.
Synonyms
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 "renin", not the corpus desk frequency band.
Same letter count
Frequency-ranked English headwords with 5 letters (nearest by frequency rank).