obstruent

...Also, since nasals are often voiced, only the position of the obstruction is specified and they are called bilabial nasals [m]. Furthermore, stops and fricatives are collectively called obstruents, and laterals, trills, and pops are collectively called liquids. Anything that adds a certain transformation to the above basic articulations is called a secondary articulation, and there are the following secondary articulations...

*Some terminology explanations that mention "obstruent" are listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

…また鼻音では有声の場合が多いので妨害の位置のみ指定し，両唇鼻音[m]のように呼ぶ。さらに閉鎖音と摩擦音を合わせて阻害音obstruentと称し，側音と顫動音，弾音をまとめて流音liquidという。以上の基本的調音に，ある変形を加えるものを副次的調音と呼ぶが，次のような副次的調音がある。…

※「obstruent」について言及している用語解説の一部を掲載しています。

出典｜株式会社平凡社世界大百科事典 第２版について | 情報