doxycycline

noun

doxy·​cy·​cline ˌdäk-sə-ˈsī-ˌklēn 

: a broad-spectrum tetracycline antibiotic C₂₂H₂₄N₂O₈ used orally to treat various bacterial infections

Examples of doxycycline in a Sentence

Recent Examples on the Web

Depending on factors such as the patient’s clinical condition and preexisting conditions and whether the infection was acquired in the hospital or in the community, the antibiotic choices could include one or multiple drugs such as levofloxacin, azithromycin, doxycycline and rifampin. —Katia Hetter, CNN Money, 4 Sep. 2025

The expression could be turned on or off using the antibiotic doxycycline, which allowed for time-specific testing. —New Atlas, 4 Aug. 2025

Systemic drugs, including the antibiotic doxycycline, can help cool off inflammation in the scalp during flare-ups and can be used for anywhere from one month to a year. —Ashley Abramson, Allure, 4 Aug. 2025

Sometimes people are given a single dose of the antibiotic doxycycline for disease prevention, Ng added.10 6. —Stephanie Brown, Verywell Health, 4 Aug. 2025

Word History

Etymology

deoxy- + tetracycline

First Known Use

1966, in the meaning defined above

Rhymes for doxycycline

• anthracycline
• minocycline
• tetracycline
• chlortetracycline
• oxytetracycline

Medical Definition

doxycycline

noun

doxy·​cy·​cline ˌdäk-sə-ˈsī-ˌklēn 

: a broad-spectrum tetracycline antibiotic C₂₂H₂₄N₂O₈ used orally to treat various bacterial infections