/ Thesaurus / R Synonyms of rocephin Find synonyms for: Noun1. ceftriaxone, Rocephin, cephalosporin, Mefoxinusage: a parenteral cephalosporin (trade name Rocephin) used for severe infection of the lungs or throat or ears or urinary tractWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: maritime Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language