supercollider Syllabification: (su·per·col·lid·er)Pronunciation: /ˈso͞opərkəˌlīdər/Definition of supercollider noun Physics a collider in which superconducting magnets are used to accelerate particles to energies of millions of megavolts. supercollider in other Oxford dictionaries Definition of supercollider in the British & World English dictionary