Vowel-less alphabets are called abjads, currently exemplified in others such as Arabic, Hebrew, and Syriac.
vˈaʊəllˈɛs ˈælfəbˌɛts ɑːɹ kˈɔːld ɐbdʒˈædz, kˈɜːɹəntli ɛɡzˈɛmplᵻfˌaɪd ɪn ˈʌðɚz sˈʌtʃ ɐz ˈæɹɐbˌɪk, hˈiːbɹuː, ænd sˈɪɹiˌæk.