histidine
"histidine" is a 9-letter English headword indexed on PlainSpell.
The verdict
“histidine” is uncommon English (frequency #70,747 among 2,646 “H” headwords), classed as a noun. The kind of spelling people second-guess.
- #70,747
- frequency rank, English
- 2,646
- “H” headwords
According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - An essential amino acid C₆H₉N₃O₂ found in most animal proteins; essential for tissue growth and repair.
Corpus desk
Index EN-histidine · histidine · English
histidine · rank #70,747 · 0 variants · 0 confusables
- FREQ-RARE #70,747
- LEN-LONG 9 letters
- VOW-4 4 vowels
- CONFUS-0 No pairs
- VAR-0 0 variants
- BOOK-MID 2,646
- PHOTO-FINISH hird
Nearest frequency peer: hird (-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 “histidine”
Sparse band: bars invert rank so rarer forms read shorter
- highline
highline
29,258 corpus weight
- hird
hird
29,255 corpus weight
- histidine
histidine
29,254 corpus weight
- hoar
hoar
29,253 corpus weight
- hoeing
hoeing
29,252 corpus weight
- homebound
homebound
29,251 corpus weight
What this shows Long-tail view: where “histidine” sits against similarly uncommon English ranks.
| Property | Value |
|---|---|
| Headword | histidine |
| Language | English |
| Part of speech | Noun |
| Letters | 9 |
| Frequency rank | #70,747 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Long-tail rank of “histidine” in English
Rare enough to double-check
histidine is uncommon English at frequency #70,747 among 2,646 “H” headwords, classed as anoun. Rarity is why readers land here mid-draft. Gloss: "An essential amino acid C₆H₉N₃O₂ found in most animal proteins; essential for tissue growth and repair.".
histidine has no tracked misspelling variants, suggesting the orthography follows predictable English patterns. No confusable counterpart is on file for this word, since nothing in our dataset looks or sounds close enough to cause mix-ups.
Etymologically, the entry records: From histo- + -idine. The correct English form is histidine, spelled H-I-S-T-I-D-I-N-E.
Definition
- 1An essential amino acid C₆H₉N₃O₂ found in most animal proteins; essential for tissue growth and repair.
Etymology
From histo- + -idine.
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 "histidine", not the corpus desk frequency band.
Same letter count
Frequency-ranked English headwords with 9 letters (nearest by frequency rank).