ɐ kɹaɪtˈiəɹɪən ɔːɹ kɹaɪtˈiəɹɪə fɔːɹ dɪtˈɜːmɪnɪŋ wɛn ɐn ˈɛlɪmənt ɪz ˈeɪ "dˈɛd ˈɛnd", ðæt ˈɪz, wˌɛn ɪt kænˈɑːt pˈɑːsᵻbli biː ɐ mˈɛmbɚɹ ʌvðə səlˈuːʃən sˈɛt
A criterion or criteria for determining when an element is a "dead end", that is, when it cannot possibly be a member of the solution set