amoxicillin

noun

amox·​i·​cil·​lin ə-ˌmäk-sē-ˈsi-lən 

: a semisynthetic penicillin C₁₆H₁₉N₃O₅S derived from ampicillin

Examples of amoxicillin in a Sentence

Recent Examples on the Web

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

The bacteria were resistant to antibiotics, including amoxicillin–clavulanate, cefuroxime, and cefotaxime, according to the analysis. —Mary Kekatos, ABC News, 13 Aug. 2025

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

In the event that a patient develops Lyme, the disease typically responds well to a course of antibiotics, which may include doxycycline, amoxicillin or cefuroxime, according to experts. —Amy McGorry, FOXNews.com, 29 July 2025

Word History

Etymology

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

First Known Use

1971, in the meaning defined above

Rhymes for amoxicillin

• carbenicillin
• haematoxylin
• ampicillin
• methicillin
• penicillin
• pyroxylin
• millon
• villain
• vanillin

Medical Definition

amoxicillin

noun

amox·​i·​cil·​lin

variants or British amoxycillin

ə-ˌmäk-sē-ˈsil-ən 

: a semisynthetic penicillin C₁₆H₁₉N₃O₅S derived from ampicillin see amoxil, augmentin, larotid, trimox