leptin
/ˈlɛptɪn/
"leptin" is a 6-letter English headword indexed on PlainSpell.
The verdict
“leptin” is uncommon English (frequency #58,146 among 2,297 “L” headwords), classed as a noun. The kind of spelling people second-guess.
- #58,146
- frequency rank, English
- 2,297
- “L” headwords
According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - A protein hormone produced in adipose tissue; it plays a role in regulating appetite and metabolism.
Corpus desk
Index EN-leptin · leptin · English
leptin · rank #58,146 · 0 variants · 0 confusables
- FREQ-RARE #58,146
- LEN-LONG 6 letters
- VOW-2 2 vowels
- CONFUS-0 No pairs
- VAR-0 0 variants
- BOOK-MID 2,297
- PHOTO-FINISH latakia
Nearest frequency peer: latakia (-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 “leptin”
Sparse band: bars invert rank so rarer forms read shorter
- Kuznetsov
Kuznetsov
41,859 corpus weight
- latakia
latakia
41,857 corpus weight
- leptin
leptin
41,855 corpus weight
- libtard
libtard
41,853 corpus weight
- likenesses
likenesses
41,852 corpus weight
- likening
likening
41,851 corpus weight
What this shows Long-tail view: where “leptin” sits against similarly uncommon English ranks.
| Property | Value |
|---|---|
| Headword | leptin |
| Language | English |
| Part of speech | Noun |
| IPA | /ˈlɛptɪn/ |
| Letters | 6 |
| Frequency rank | #58,146 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Long-tail rank of “leptin” in English
Rare enough to double-check
leptin is uncommon English at frequency #58,146 among 2,297 “L” headwords, classed as anoun, transcribed /ˈlɛptɪn/. Rarity is why readers land here mid-draft. Gloss: "A protein hormone produced in adipose tissue; it plays a role in regulating appetite and metabolism.".
No misspelling variants are generated for leptin in our index, which points to an orthography that plays by predictable English rules. It is not paired with a close-neighbour confusable in our dataset, a sign it's visually distinctive enough not to be mixed up with another word.
Etymologically, the entry records: Ancient Greek λεπτός (leptós, “thin”) + -in The correct English form is leptin, spelled L-E-P-T-I-N.
Definition
- 1A protein hormone produced in adipose tissue; it plays a role in regulating appetite and metabolism.
Recorded use
Wiktionary examplesThese source excerpts show how leptin appears in context. They illustrate usage; the definition above remains the entry’s reference meaning.
If we could control leptin, then presumably we could help people to control their weight.
That is because sleep affects two appetite-controlling hormones, leptin and ghrelin.
Etymology
Ancient Greek λεπτός (leptós, “thin”) + -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
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Similar English words by spelling shape
Same letter count and similar misspelling depth for "leptin", not the corpus desk frequency band.
Same letter count
Frequency-ranked English headwords with 6 letters (nearest by frequency rank).