Trésének
Trésének is a term primarily used in Hungarian and sometimes in related linguistic contexts to describe a specific vowel sound. It refers to a front, rounded, mid-high vowel. This means the highest point of the tongue is positioned in the front of the mouth, but not as high as for a high vowel like 'i'. The lips are rounded during the production of this sound, similar to how they would be for an 'oo' sound.
The phonetic symbol for trésének is /ø/. This sound is common in many European languages, including German
The distinction between front rounded vowels like /ø/ and back rounded vowels like /o/ (as in English