The letter "ô" is a character used in several languages, including French and Portuguese. It is formed by adding a circumflex accent (^) over the letter "o." This accent can change the pronunciation of the vowel, often indicating a longer or more closed sound compared to a regular "o." In French, "ô" appears in words like "hôtel" and "pôle," where it affects the way the word is pronounced. In Portuguese, it can be found in words such as "vôo" (meaning "flight"). The circumflex accent can also indicate historical spelling changes in these languages.