O (hangul)

In the Korean language (Hangul), the letter "O" (오) represents a vowel sound. It is written as "오" and is Romanized as "o". This vowel is a monophthong, meaning its sound does not change during its articulation. It is considered a mid-back rounded vowel.

The pronunciation of "오" is similar to the "o" sound in the English word "go," although the Korean sound is generally articulated with slightly more rounded lips.

"오" is a relatively common vowel and appears frequently in Korean words. It can be combined with various consonants to form different syllables.