amoxicillin

noun

amox·​i·​cil·​lin ə-ˌmäk-sē-ˈsi-lən How to pronounce amoxicillin (audio)
: a semisynthetic penicillin C16H19N3O5S derived from ampicillin

Examples of amoxicillin in a Sentence

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Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
In this method, patients take a low dose of amoxicillin and are observed for about 30 minutes to see whether any reaction occurs. — Elizabeth W. Covington, The Conversation, 31 July 2025 The facility, built in the 1970s, used to produce enough amoxicillin for the whole country at the time. — John Liu, CNN Money, 3 June 2025 The study’s authors showed that common antibiotics, such as amoxicillin and tetracycline, stuck to microplastics—and that, the older the microplastics were, the more readily the antibiotics attached to them. — Marta Zaraska, Scientific American, 26 Aug. 2025 Common antibiotics used to treat Lyme disease include doxycycline, amoxicillin, and cefuroxime. — Stephen Underwood, Hartford Courant, 9 Apr. 2026 See All Example Sentences for amoxicillin

Word History

Etymology

am(ino) + ox- + (pen)icillin

First Known Use

1971, in the meaning defined above

Time Traveler
The first known use of amoxicillin was in 1971

Rhymes for amoxicillin

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Browse Nearby Words

amove
amoxicillin
amoxycillin
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Cite this Entry

“Amoxicillin.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/amoxicillin. Accessed 8 Jul. 2026.

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Medical Definition

amoxicillin

noun
amox·​i·​cil·​lin
variants or British amoxycillin
ə-ˌmäk-sē-ˈsil-ən How to pronounce amoxicillin (audio)
: a semisynthetic penicillin C16H19N3O5S derived from ampicillin see amoxil, augmentin, larotid, trimox
Last Updated: - Updated example sentences
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