diphthongoid

A vowel that is midway between a monophthong and a diphthong.

Japanese Meaning

二重母音と単母音の中間的な母音

The linguist described the vowel as a diphthongoid rather than a clear monophthong or diphthong.

音声学者はその母音を、明確な単母音でも二重母音でもなく、単母音と二重母音の中間に位置する母音だと説明した。

Sense（1）

A vowel that is midway between a monophthong and a diphthong.

diphthongoids

（ plural ）