The tilde is a grapheme ⟨˜⟩ or ⟨~⟩ with a number of uses. The name of the character came into English from Spanish tilde, which, in turn, came from the Latin titulus, meaning 'title' or 'superscriptio
Text of Exeter Domesday Book of 1086
An Olivetti Lettera 32 typewriter (Portuguese Model) with tilde (and circumflex) dead-key beside Ç
Spanish typewriter (QWERTY keyboard) with dead keys for acute, circumflex, diaeresis and grave accents. Ñ/ñ is present as a precomposed character only.
Carta marina showing Finnish economy, with the captions Hic fabricantur naves and Hic fabricantur bombarde abbreviated. This tilde had the shape of a macron.
A diacritic is a glyph added to a letter or to a basic glyph. The term derives from the Ancient Greek διακριτικός, from διακρίνω. The word diacritic is a noun, though it is sometimes used in an attrib
Tilde
…English from Spanish tilde, which, in turn, came from the Latin titulus, meaning 'title' or 'superscription'. Its primary use internationally is as a diacritic in combination with a base letter. Its freestanding form, most common in English, is used in modern texts mainly to indicate approximation. The tilde…
Hangul, the Korean syllabary
German keyboard with umlaut letters
Blackboard used in class at Harvard shows students' efforts at placing the ü and acute accent diacritic used in Spanish orthography.