eryth·​ro·​my·​cin | \ i-ˌrith-rə-ˈmī-sᵊn How to pronounce erythromycin (audio) \

Definition of erythromycin

: a broad-spectrum antibiotic C37H67NO13 produced by an actinomycete (Saccharopolyspora erythraea synonym Streptomyces erythraeus) and administered orally or topically

Examples of erythromycin in a Sentence

Recent Examples on the Web Instead, both the artificial and natural nests were rich in Pseudonocardiaceae and Streptomycetaceae, bacterial families that produce many common antibiotics, including erythromycin. Stephenie Livingston, Science | AAAS, "Florida woodrat nests are laced with antibiotic-producing bacteria," 15 Sep. 2020 Some examples of topical antibiotics are erythromycin and clindamycin. Kristin Koch, Seventeen, "30 Dermatologist-Tested Tips for Getting Rid of Acne, Like, REALLY Fast," 1 Aug. 2020 The antibiotics facing export limits are tinidazole, metronidazole, chloramphenicol, erythromycin salts, neomycin, clindamycin salts and ornidazole. Vindu Goel, New York Times, "As Coronavirus Disrupts Factories, India Curbs Exports of Key Drugs," 10 Mar. 2020 British researchers studied more than 180,000 children whose mothers were prescribed either penicillin or one of the macrolide antibiotics — such as erythromycin, clarithromycin or azithromycin — during or up to a year before pregnancy. Nicholas Bakalar, New York Times, "Macrolide Antibiotics Early in Pregnancy Tied to Birth Defects," 19 Feb. 2020 In 2005, Sweden warned against the use of the macrolide erythromycin during the first trimester of pregnancy after a report found a link between the medicine and heart defects, the study said. Gisela Crespo, CNN, "Common antibiotics linked to increased risk of birth defects, study says," 19 Feb. 2020 But doctors often use erythromycin and azithromycin to treat the condition, especially for people allergic to penicillin. Anchorage Daily News, "Deadly superbugs pose greater threat than previously estimated," 13 Nov. 2019 Nearly half of bacteria gathered in public settings around the city were resistant to two or more commonly used antibiotics, like penicillin and erythromycin. Christopher Intagliata reports. Christopher Intagliata, Scientific American, "London Crawling with Drug-Resistant Microbes," 3 Aug. 2019 But other types, such as erythromycin and tetracycline, may not be recommended or may be reserved only for more severe cases or short-term use. Nikhita Mahtani, SELF, "How to Safely Treat Your Postpartum Acne," 24 Apr. 2019

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'erythromycin.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of erythromycin

1952, in the meaning defined above

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The first known use of erythromycin was in 1952

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Cite this Entry

“Erythromycin.” Dictionary, Merriam-Webster, Accessed 5 Mar. 2021.

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More Definitions for erythromycin


eryth·​ro·​my·​cin | \ i-ˌrith-rə-ˈmīs-ᵊn How to pronounce erythromycin (audio) \

Medical Definition of erythromycin

: a broad-spectrum macrolide antibiotic C37H67NO13 that is produced by an actinomycetous bacterium (Saccharopolyspora erythraea synonym Streptomyces erythraeus), resembles penicillin in antibacterial activity, and is used (as in the form of its estolate or stearate) to treat bacterial infections or sometimes infections caused by other microbes (as amoebas)

Note: Erythromycin may be administered orally, topically, or by injection.

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