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Look up Omnibus, omnibus, or omnibuses in Wiktionary, the free dictionary. Omnibus is the Latin for for all , and refers to a passenger-carrying vehicle, originally an enclosed horse-drawn one.
[From Latin -plex, -fold (as in duplex, twofold); see plek-in Indo-European roots.] -plex a combining form meaning âhaving parts or unitsâ of the number specified by the initial element, occurring orig. in loanwords from Latin (duplex); recent English coinages ending in -plex are probably in part new formations with this suffix and in part based on the noun complex: eightplex; Cineplex; Metroplex. [< Latin -plex, s.