arginine
/ˈɑɹɡɪniːn/
"arginine" is a 8-letter English headword indexed on PlainSpell.
The verdict
“arginine” is a moderately-common English word, ranked #41,511 in English word frequency and used as a noun.
- #41,511
- frequency rank, English
- 8
- letters
- 11
- tracked misspellings
- 3
- confusable pairs
According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - An amino acid found in animal foods that plays an important role in several physiological processes.
Visual similarity to commonly confused words
How many letter changes separate each confused pair (Levenshtein distance, normalized).
Source: PlainSpell confusable corpus (Wiktionary, CC BY-SA).
| Property | Value |
|---|---|
| Headword | arginine |
| Language | English |
| Part of speech | Noun |
| IPA | /ˈɑɹɡɪniːn/ |
| Letters | 8 |
| Frequency rank | #41,511 |
| Misspellings tracked | 11 |
| Confusable pairs | 3 |
| Source | Wiktionary (kaikki.org) |
Where “arginine” sits in English frequency
Spelling & Dictionary Insight
The English entry for arginine is 8 letters long, classified as a noun, and transcribed in the International Phonetic Alphabet as /ˈɑɹɡɪniːn/. Corpus data places it at rank #41,511 in overall English word frequency, marking it as uncommon enough that many writers pause before typing it. The dominant gloss from Wiktionary reads: "An amino acid found in animal foods that plays an important role in several physiological processes.".
Our generated misspelling index lists 11 likely wrong-spelling variants for arginine, with forms such as "agrinine", "argginine", and "argiinne". Every one of these variants traces to a single-character edit -- an added or dropped letter, a swapped consonant, or a vowel swap -- the kind of slip a spell-checker is built to catch. It also participates in 3 confusable-pair relationships, "Argonne", "asinine", "argentine", where similar look or sound leads writers to substitute one word for another in context.
Etymologically, the entry records: From German Arginin, from Ancient Greek ἄργυρος (árguros, “silver”) and ἀργινόεις (arginóeis, “silvery, brightly shining”) in reference to arginine nitrate crystals' silver-white appearance when first refined from lupin seedlings by Ernst Schulze and Ernst … The correct English form is arginine, spelled A-R-G-I-N-I-N-E.
Definition
- 1An amino acid found in animal foods that plays an important role in several physiological processes.
Etymology
From German Arginin, from Ancient Greek ἄργυρος (árguros, “silver”) and ἀργινόεις (arginóeis, “silvery, brightly shining”) in reference to arginine nitrate crystals' silver-white appearance when first refined from lupin seedlings by Ernst Schulze and Ernst Steiger in 1886.
Synonyms
This word in other languages
Common misspellings
Also misspelled as: agrinine,argginine,argiinne,arginien,argininne,arginnie,arginnine,argniine,arignine,arrginine,raginine
Misspelling Pattern Breakdown
How far each generated variant is from the correct spelling of arginine - expressed in single-character edits (insert, delete, or swap one letter). Bigger bars stand out at a glance; a one-edit slip is the hardest to catch.
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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Using “arginine”
The practical upshot for anyone who landed here from a spell-check.
- The one correct English spelling is A-R-G-I-N-I-N-E - every other letter order is a misspelling in standard orthography.
- Say it as /ˈɑɹɡɪniːn/ (IPA); tap the speaker on the pronunciation badge to hear it where audio exists.
- Don't mix it up with “Argonne” - see the side-by-side comparison. arginine vs Argonne
- Browse more English words and confusable pairs in the same reference. English words
Data Source
Wiktionary (via kaikki.org), licensed under CC BY-SA & GFDL. Word ordering uses an open word-frequency list; misspelling variants are generated by edit-distance from the correct headword.