From Wiktionary, the free dictionary
From French autobus, analyzable as Auto + Bus.
Autobus m (strong, genitive Autobusses, plural Autobusse)
- bus
Declension of Autobus [masculine, strong]
- “Autobus” in Duden online
- “Autobus”, in Digitales Wörterbuch der deutschen Sprache[1] (in German)