semivowel
['semi,vauəl]
n. [语音学]半元音（如w，j等）；[语音学]半元音字（如 y，ng等）
同义词
参考例子
1.A semivowel, one having an audible sound by the addition of another Letter; e. g. S and R.
半元音是由另一个字母辅助才能够发出声音的字母，比如S或R；
2.Syllable is a nonsignificant composite sound, made up of a mute and a Letter having a sound (a vowel or semivowel); for GR, without an A, is just as much a Syllable as GRA, with an A.
音节是由一个哑音字母和一个发声字母（元音或者半元音）构成的无意义的复合声音，没有A时GR是一个音节，而有A时GRA也是一个音节。
3.A Syllable is a nonsignificant composite sound, made up of a mute and a Letter having a sound (a vowel or semivowel); for GR, without an A, is just as much a Syllable as GRA, with an A.
音节是由一个哑音字母和一个发声字母（元音或者半元音）构成的无意义的复合声音，没有A时GR是一个音节，而有A时GRA也是一个音节。
英文解释
n.
1.a vowellike sound that serves as a consonant
网络释义
semivowel
半元音; 半母音; 无擦通音; 半元音字;
semivowel consonant
释义：半元音的辅音;