cef·​tri·​ax·​one | \ ˌsef-ˌtrī-ˈak-ˌsōn How to pronounce ceftriaxone (audio) \

Definition of ceftriaxone

: a broad-spectrum semisynthetic cephalosporin antibiotic C18H18N8O7S3 administered parenterally in the form of its sodium salt

Examples of ceftriaxone in a Sentence

Recent Examples on the Web That said, the CDC points out that if the initial symptoms of Lyme aren't caught early enough and spread to the nervous system or heart, intravenous treatment with antibiotics such as ceftriaxone or penicillin may be used. Leah Groth, Health.com, 12 June 2020 All patients also received the antibiotics ceftriaxone and azithromycin as part of their treatment. Elizabeth Cohen, CNN, 13 Apr. 2020 Last year in the United Kingdom, a man was infected with a multidrug-resistant form of gonorrhea that was resistant to first-line treatment, a combination of the antibiotics azithromycin and ceftriaxone, according to Public Health England. Jacqueline Howard, CNN, 8 Oct. 2019 Researchers compared it to injectable ceftriaxone and found promising results, with side effects mainly limited to mild gastrointestinal issues. Cathleen O'grady, Ars Technica, 15 Nov. 2018 The current recommended cure — an injection of a drug called ceftriaxone, given in combination with a second antibiotic, azithromycin — is the last good option to treat this infection, and there are already signs that its days may be numbered. Helen Branswell, STAT, 6 July 2018 Though the man in England had an especially persistent case of gonorrhea, this is far from the first time resistance to azithromycin and ceftriaxone has appeared on experts’ radar. Carolyn L. Todd, SELF, 31 May 2018 Genetic sequencing revealed that a common, aggressive MDR typhoid strain called H58 interacted with another bacteria, likely E. coli, and acquired from it an additional DNA molecule, called a plasmid, that coded for resistance to ceftriaxone. Emily Baumgaertner, New York Times, 13 Apr. 2018 The bacteria that have grown will be measured for resistance to five antibiotics, including ciprofloxacin and the last-resort drugs cefixime and ceftriaxone. Sophie Cousins, CNN, 15 May 2018

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

See More

First Known Use of ceftriaxone

1984, in the meaning defined above

History and Etymology for ceftriaxone

cef- (alteration of cephalosporin) + -triaxone, of unknown origin

Keep scrolling for more

Learn More About ceftriaxone

Time Traveler for ceftriaxone

Time Traveler

The first known use of ceftriaxone was in 1984

See more words from the same year

Dictionary Entries Near ceftriaxone

cee spring



See More Nearby Entries 

Statistics for ceftriaxone

Cite this Entry

“Ceftriaxone.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/ceftriaxone. Accessed 24 Oct. 2021.

Style: MLA
MLACheck Mark Icon ChicagoCheck Mark Icon APACheck Mark Icon Merriam-WebsterCheck Mark Icon
Seen & Heard
People are talking about

Keep scrolling for more

More Definitions for ceftriaxone


cef·​tri·​ax·​one | \ ˌsef-ˌtrī-ˈak-ˌsōn How to pronounce ceftriaxone (audio) \

Medical Definition of ceftriaxone

: a semisynthetic cephalosporin antibiotic that is administered parenterally in the form of its hydrated disodium salt C18H16N8Na2O7S3·3¹/₂H2O


Test Your Vocabulary

Difficult Spelling Words Quiz

  • alphabet pasta spelling help
  • Which is the correct spelling?
True or False

Test your knowledge - and maybe learn something along the way.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!