◎ 韻頭 yùntóu
[head vowel, any of the three vowels “i”,“u” and “ü”in certain compound vowels, as “i” in “iang”] 介音。是介于主要元音與聲母之間的高元音

1.head vowel, any of the three vowels [i], [u] and [ü] in certain compound vowels, as [i] in [iang]

又稱介音。某些韻母的組成部分，是介于聲母和韻腹之間的高元音。參見“ 韻母 ”。