retrofuturism Syllabification: (ret·ro·fu·tur·ism)Pronunciation: /ˌretrōˈfyo͞oCHəˌrizm/Definition of retrofuturism noun the use of a style or aesthetic considered futuristic in an earlier era. Derivatives retrofuturistic adjective retrofuturism in other Oxford dictionaries Definition of retrofuturism in the British & World English dictionary