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Definition of zithromax
zithromax
/ˈzɪθ.ɹə.mæks/
Zith · ro · max
zithromax Lexical Profile
CEFR
C1
Grade
10
Tier
3
Usage
Rare
• noun
1
North American A widely used brand-name prescription antibiotic medication containing azithromycin, used to treat various bacterial infections including respiratory, skin, ear, and sexually transmitted infections.
Example
"The doctor prescribed a five-day course of Zithromax to clear up her persistent sinus infection."
Synonyms
View all synonyms for zithromaxWord Nuance & Usage
As a registered pharmaceutical trademark, it should be capitalized (Zithromax). In North America, it is frequently dispensed in a pre-packaged five-day regimen colloquially known as a 'Z-Pak'.
Word Origin & Etymology
A pharmaceutical brand name coined in the early 1990s by Pfizer, derived from its active generic ingredient, azithromycin, combined with 'max' to suggest maximum efficacy or a broad spectrum of treatment.
Cite this Entry
Wordmom. (2026). Definition of Zithromax. In Wordmom Dictionary. Retrieved Oct 17, 2026, from https://wordmom.com/dictionary/zithromax