Open central rounded vowel

The open central rounded vowel, or low central rounded vowel, is a type of vowel sound, used in few spoken languages. While the International Phonetic Alphabet officially has no dedicated letter for this sound between front and back, it is normally written $\langle\rangle$. If precision is required, it can be specified by using diacritics, such as centralized $\langle\rangle$ or advanced $\langle\rangle$, but this is not common.

The IPA prefers terms "close" and "open" for vowels, and the name of the article follows this. However, a large number of linguists, perhaps a majority, prefer the terms "high" and "low".