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amoxicillin.

A moderate-spectrum, bacteriolytic beta-lactam antibiotic with the formula C₁₆H₁₉N₃O₅S, closely related to ampicillin.

11 characters5 syllables approx.English language

Meaning & usage

noun/əˌmɒk.sɪˈsɪl.ɪn/Received-Pronunciation/əˌmak.sɪˈsɪlːɪn/General-American
  1. A moderate-spectrum, bacteriolytic beta-lactam antibiotic with the formula C₁₆H₁₉N₃O₅S, closely related to ampicillin.

    countable · uncountable
Where this word comes from

Etymology tree Egyptian jmnbor. Ancient Greek Ᾰ̓́μμων (Ắmmōn)bor. Latin Ammōn Latin ammoniacusder. English ammonia Proto-Indo-European *-nós Proto-Indo-European *-iHnos Proto-Italic *-īnos Latin -īnusder. Old French -inbor. Middle English -in English -ine English amine Ancient Greek -ο- (-o-)der. Latin -o-bor. English -o- English am(ino)- Proto-Indo-European *pes- Proto-Indo-European *pes-ni-s Proto-Italic *peznis Latin pēnis Proto-Indo-European *-lós Proto-Indo-European *-elós Proto-Italic *-elos Proto-Italic *-kelos Latin -culus Latin pēniculus ▲ Proto-Italic *-elos Latin -lus Latin -illum Latin pēnicillum Translingual -ium Translingual Penicillium ▲ English -ineclip. English -in English p(en)icillin English am(picillin) Proto-Indo-European *h₂eḱ-der.? Ancient Greek ὀξῠ́ς (oxŭ́s)bor. English (hydr)oxy ▲ English penicillin English -cillin English amoxicillin From am(picillin) + (hydr)oxy + -cillin.

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Definitions, grammatical labels, IPA, etymology and examples: Wiktionary contributors, extracted by Kaikki / Wiktextract. Adapted under CC BY-SA 4.0. Selected fields and authored examples are shown; third-party quotations and audio are omitted. See contributor history.

Last enriched 2026-09-10. Definitions are in English. Romanizations are shown when supplied by the source; syllable estimates are omitted for unsupported scripts.