amoxicillin
/əˌmɒk.sɪˈsɪl.ɪn/
"amoxicillin" is a 11-letter English headword indexed on PlainSpell.
The verdict
“amoxicillin” is an uncommon English word, ranked #69,638 in English word frequency and used as a noun.
- #69,638
- frequency rank, English
- 11
- letters
According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - A moderate-spectrum, bacteriolytic beta-lactam antibiotic with the formula C₁₆H₁₉N₃O₅S, closely related to ampicillin.
| Property | Value |
|---|---|
| Headword | amoxicillin |
| Language | English |
| Part of speech | Noun |
| IPA | /əˌmɒk.sɪˈsɪl.ɪn/ |
| Letters | 11 |
| Frequency rank | #69,638 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Where “amoxicillin” sits in English frequency
Spelling & Dictionary Insight
The English entry for amoxicillin is 11 letters long, classified as a noun, and transcribed in the International Phonetic Alphabet as /əˌmɒk.sɪˈsɪl.ɪn/. Corpus data places it at rank #69,638 in overall English word frequency, marking it as uncommon enough that many writers pause before typing it. The dominant gloss from Wiktionary reads: "A moderate-spectrum, bacteriolytic beta-lactam antibiotic with the formula C₁₆H₁₉N₃O₅S, closely related to ampicillin.".
Our edit-distance generator produced no likely misspellings for amoxicillin, and the word's spelling is regular enough that our generator found nothing worth flagging. No close-neighbour confusable shows up for this headword in our dataset, a sign it's visually distinctive enough not to be mixed up with another word.
Etymologically, the entry records: From am(picillin) + (hydr)oxy + -cillin. The correct English form is amoxicillin, spelled A-M-O-X-I-C-I-L-L-I-N.
Definition
- 1A moderate-spectrum, bacteriolytic beta-lactam antibiotic with the formula C₁₆H₁₉N₃O₅S, closely related to ampicillin.
Etymology
From am(picillin) + (hydr)oxy + -cillin.
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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Using “amoxicillin”
The practical upshot for anyone who landed here from a spell-check.
- The one correct English spelling is A-M-O-X-I-C-I-L-L-I-N - every other letter order is a misspelling in standard orthography.
- Say it as /əˌmɒk.sɪˈsɪl.ɪn/ (IPA); tap the speaker on the pronunciation badge to hear it where audio exists.
- 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.