O And P Glass Is Being Used In The World's Tallest Skyscrapers
O, or o, is the fifteenth letter and the fourth vowel letter of the Latin alphabet, used in the modern English alphabet, the alphabets of other western European languages and others worldwide. O definition: the fifteenth letter of the English alphabet, a vowel. See examples of O used in a sentence. O is used to mean zero, for example when you are telling someone a phone number, or mentioning a year such as 1908.
Worlds Tallest Skyscrapers
