Pronunciation (US) IPA (key): /ˈɔtoʊ/ or /ˈɑtoʊ/ or [ˈɔɾoʊ] or [ˈɑɾoʊ] (Canada) IPA (key): /ˈɑtoʊ/ or [ˈɑɾoʊ] (UK) IPA (key): /ˈɔːtəʊ/ Homophone: Otto Noun Singular auto Plural autos Another way of spelling automobile. Related words auto-Wikiwand - on Seamless Wikipedia browsing. On steroids.Remove ads