Ñ (lower case ñ, , ) is a letter of the modern Latin alphabet, formed by placing a tilde (also referred to as "virgulilla" in Spanish) on top of an upper- or lowercase "N". It became part of the Spanish alphabet in the eighteenth century when it was first formally defined, but it has subsequently been used in other languages, such as Galician, Asturian, the Aragonese "Grafra di Uesca", Basque, Chavacano, some Philippine languages (especially Filipino and Bisayan), Chamorro, Guarani, Quechua, Mapudungun, Mandinka, and Tetum alphabets, as well as in Latin transliteration of Tocharian and Sanskrit, where it represents . It represents in Crimean Tatar, Malay, Indonesian, Nauruan and romanized Quenya. In Breton and in Rohingya, it denotes nasalization of the preceding vowel. Many Portuguese speakers use this letter in informal internet language to represent the word "não" (not).