noun. a systemic antibacterial medicine (trade name Zithromax) that is prescribed to treat bacterial infections in many different parts of the body.
1. Noun, singular or mass Give azithromycin to your child with a small meal. 2. Adjective In case of gonococcal urethritis, a cephalosporin, such as ceftriaxone or cefixime, may be added along with azithromycin 1.