Doxycycline

//ˌdɒk.sɪˈsʌɪ.kliːn// noun

noun ·Rare ·Advanced level

Definitions

Noun
  1. 1
    A broad-spectrum antibiotic C₂₂H₂₄N₂O₈ of the tetracycline class, which has a long half-life in the body and used orally to treat various bacterial infections. uncountable

    "When his symptoms didnʼt improve, he was admitted to a local hospital and given doxycycline, a drug for tick-bite infections."

  2. 2
    an antibiotic derived from tetracycline that is effective against many infections wordnet

Example

More examples

"When his symptoms didnʼt improve, he was admitted to a local hospital and given doxycycline, a drug for tick-bite infections."

Etymology

Blend of d(e)oxy- + oxy(tetra)cycline.

Related phrases

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.