superfine Syllabification: (su·per·fine)Pronunciation: /ˌso͞opərˈfīn/Definition of superfine adjective 1of especially high quality:superfine upholstery 2(of fibers or an instrument) very thin:superfine tweezers consisting of especially small particles:superfine sugarOrigin: late 16th century (in the sense 'excessively elegant'): from super- 'to a high degree' + fine1superfine in other Oxford dictionaries Definition of superfine in the British & World English dictionary