glottal
/ˈɡlɒtəl/Definitions
1. adjective
relating to or involving the glottis, especially in speech or singing.
“The glottal stop is a common feature in many languages, including Arabic and Hawaiian.”
2. noun
the sound or position of the glottis, especially in speech or singing.
“The glottal quality of her voice added a unique tone to the song.”