antibiotic

noun
an·ti·bi·ot·ic | \ˌan-tē-bī-ˈä-tik, -ˌtī-;-bē-ˈä- \

Definition of antibiotic 

(Entry 1 of 2)

: a substance produced by or a semisynthetic (see semisynthetic sense 1) substance derived from a microorganism and able in dilute solution to inhibit or kill another microorganism The doctor prescribed an antibiotic to treat the infection.

antibiotic

adjective

Definition of antibiotic (Entry 2 of 2)

1 : tending to prevent, inhibit, or destroy life

2 : of or relating to antibiotics or to antibiosis antibiotic drugs

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Other Words from antibiotic

Adjective

antibiotically \-ti-k(ə-)lē \ adverb

Examples of antibiotic in a Sentence

Recent Examples on the Web: Noun

Lyme disease treatment usually involves oral antibiotics. Kate Sheridan, SELF, "Here’s Exactly What to Do if a Tick Bites You," 14 July 2018 What to order at Panera Bread Strawberry Poppyseed Salad with Chicken This salad consists of a base of greens topped with chicken (raised without antibiotics), fresh strawberries, blueberries, pineapple, mandarin oranges, and toasted pecan pieces. Health.com, "The 4 Healthiest Menu Items at Panera Bread (Plus 3 Things to Avoid)," 13 July 2018 In more advanced cases, hospitalization and intravenous antibiotics may be necessary. Milwaukee Journal Sentinel, "Reducing your risk of Lyme disease as the threat increases," 10 July 2018 Insulin, interferon and most antibiotics are common examples of meds that require refrigeration. Paul Sisson, sandiegouniontribune.com, "Emergency medication management tips," 8 July 2018 Infections and illnesses are curable in most cases, involving combinations of antibiotics taken over a few months. Betsy Mckay, WSJ, "Johns Hopkins Evacuates Two Lab Buildings After Tuberculosis Scare," 5 July 2018 Narongsak said Tuesday that the missing were given high-protein liquid food, painkillers and antibiotics. Tassanee Vejpongsa, chicagotribune.com, "Thai official: Boys may have to dive from cave despite peril," 3 July 2018 Narongsak said Tuesday that the missing were given high-protein liquid food, painkillers and antibiotics. Tassanee Vejpongsa, Houston Chronicle, "Boys, coach in stable health after 10 days lost in Thai cave," 2 July 2018 With wild fish stocks declining and imported farmed seafood concerns around sustainability and antibiotics rising, Bay Area seafood companies have started to bring in other invasive seafood species in recent years, such as Asian carp and lionfish. Tara Duggan, SFChronicle.com, "Bay Area men’s plan to market invasive fish from Mexico hits snag in U.S.," 2 July 2018

Recent Examples on the Web: Adjective

Each year an estimated two million Americans become infected with antibiotic-resistant bacteria. New York Times, "Using Harpoon-Like Appendages, Bacteria ‘Fish’ for New DNA," 14 June 2018 In just the last two decades, global antibiotic use has increased by 40 percent. Jason Daley, Smithsonian, "New “Immunobiotic” Could Treat Antibiotic-Resistant Superbugs," 6 July 2018 Earlier experience with the standardization of antibiotic prescribing shows that such a system can be effective. WSJ, "Should the Government Limit a Physician’s Ability to Treat Patients With Opioids?," 24 June 2018 The biggest problem, though, is that ADUFA isn’t considered an obligation owed to public health, as antibiotic data is in Europe. Maryn Mckenna, WIRED, "To Understand Antibiotic Abuse We Need Data From Farms," 11 June 2018 In addition, the money may support development of its antibiotic technology, called Cloudbreak. Bradley J. Fikes, sandiegouniontribune.com, "Cidara offers $120 million in stock to advance anti-infective drugs," 21 May 2018 Experts don’t know why this affects some people and not others and have found that simply continuing with antibiotic treatment can do more harm to a person’s system than good, according to the National Institute of Allergy and Infectious Diseases. Kate Sheridan, SELF, "Here’s Exactly What to Do if a Tick Bites You," 14 July 2018 By now, that’s a familiar scenario, the central narrative in the emergence of antibiotic-resistant bacteria. Maryn Mckenna, WIRED, "The Strange and Curious Case of the Deadly Superbug Yeast," 13 July 2018 The infection can be mistaken for chlamydia, but it's become resistant to traditional antibiotic treatments. Amanda Macmillan, Health.com, "What Is Mycoplasma Genitalium? British Doctors Are Warning That This Sexually Transmitted Infection Could Be the Next Big Superbug," 11 July 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'antibiotic.' 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 antibiotic

Noun

1943, in the meaning defined above

Adjective

1891, in the meaning defined at sense 1

History and Etymology for antibiotic

Noun

see biotic

Adjective

see biotic

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Last Updated

30 Sep 2018

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Time Traveler for antibiotic

The first known use of antibiotic was in 1891

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More Definitions for antibiotic

antibiotic

noun

English Language Learners Definition of antibiotic

medical : a drug that is used to kill harmful bacteria and to cure infections

antibiotic

noun
an·ti·bi·ot·ic | \ˌan-ti-bī-ˈä-tik \

Kids Definition of antibiotic

: a substance produced by living things and especially by bacteria and fungi that is used to kill or prevent the growth of harmful germs

antibiotic

adjective
an·ti·bi·ot·ic | \-bī-ˈät-ik; -bē- \

Medical Definition of antibiotic 

(Entry 1 of 2)

1 : tending to prevent, inhibit, or destroy life

2 : of or relating to antibiotics or to antibiosis

Other Words from antibiotic

antibiotically \-i-k(ə-)lē \ adverb

antibiotic

noun

Medical Definition of antibiotic (Entry 2 of 2)

: a substance produced by or a semisynthetic substance derived from a microorganism and able in dilute solution to inhibit or kill another microorganism

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