Tilde

The tilde (~) is a grapheme with several uses. The name of the character comes from Spanish, from the Latin titulus meaning a title or superscription, and is pronounced , in English, or , in Spanish. It was originally written over a letter as a mark of abbreviation (see below), but has since acquired a number of other uses as a diacritic mark or a character in its own right. In the latter capacity (especially in lexicography) it is also sometimes known as the swung dash (usually lengthened to ), twiddle or the squiggle.