Unit of Pronunciation That Has One Vowel Sound

This page is the CodyCross answer for the clue below from Past and Present Tech, Group 1460, Puzzle 5 (Artificial Intelligence).

Question is: Unit of Pronunciation That Has One Vowel Sound

and the answer is: SYLLABLE

Word Meaning:

SYLLABLE — (linguistics) A unit of human speech which often forms words corresponding to one opening of the mouth; a vowel and its surrounding consonants.

Definitions from Wiktionary.