In a broader sense, an alphabet is a segmental script at the phoneme level—that is, it has separate glyphs for individual sounds and not for larger units such as syllables or words.
ɪn ɐ bɹˈɔːdɚ sˈɛns, ɐn ˈælfəbˌɛt ɪz ɐ sɛɡmˈɛntəl skɹˈɪpt æt ðə fˈoʊniːm lˈɛvəl—ðæt ˈɪz, ɪt hɐz sˈɛpɹət ɡlˈɪfz fɔːɹ ˌɪndᵻvˈɪdʒuːəl sˈaʊndz ænd nˌɑːt fɔːɹ lˈɑːɹdʒɚ jˈuːnɪts sˈʌtʃ ɐz sˈɪləbəlz ɔːɹ wˈɜːdz.