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 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 All of them were resistant to at least seven antibiotics (azithromycin, ciprofloxacin, clindamycin, erythromycin, nalidixic acid, telithromycin, and tetracycline). Beth Mole, Ars Technica, "Drugged puppies blamed for spreading diarrhea superbugs in multi-state outbreak," 21 Sep. 2018 Penicillins, erythromycin, and cephalosporins may be better options. Korin Miller, SELF, "Here’s What You Need to Know About Treating a UTI While Pregnant," 18 Jan. 2018 There were also increased risks for birth defects with the use of moxifloxacin, ofloxacin, erythromycin and penicillin V. The study found no increase in birth defects with the use of amoxicillin, nitrofurantoin or the cephalosporins. Nicholas Bakalar, New York Times, "Certain Antibiotics May Increase Risk of Birth Defects," 20 July 2017 High frequency of resistance to tetracycline, erythromycin, streptomycin, kanamycin, and ciprofloxacin in our study likely reflects use of tetracyclines, macrolides, aminoglycosides and fluoroquinolones as feed additives for swine in the USA… Maryn Mckenna, WIRED, "Farm antibiotics, human illness and what connects them. (It has legs.)," 28 Jan. 2011

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 21 Feb. 2020.

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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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