This page is about the meaning, origin and characteristic of the symbol, emblem, seal, sign, logo or flag: Tilde.
The tilde (/ˈtɪldə/, /ˈtɪldi/; ˜ or ~ or "Squiggly" ) is a grapheme with several uses. The name of the character comes from Portuguese and Spanish, from the Latin titulus meaning "title" or "superscription", though the term "tilde" has evolved and now has a different meaning in linguistics. Some may refer to it as a "flourish".
It was originally written over a letter as a mark of abbreviation, as a "mark of suspension", shown as a straight line when used with capitals. Thus the commonly used words Anno Domini were frequently abbreviated to Ao Dñi an elevated terminal with a suspension mark placed above the "n". Such mark could denote the omission of one letter or several letters. This saved on the expense of the scribe's labour and the cost of vellum and ink. Mediaeval European charters written in Latin are largely made up of such abbreviated words with suspension marks, with few being given in full, generally only uncommon words. It has since acquired a number of other uses as a diacritic mark or a character in its own right. These are encoded in Unicode at U+0303 ◌̃ combining tilde and U+007E ~ tilde (as a spacing character), and there are additional similar characters for different roles. In lexicography, the latter kind of tilde and the swung dash (⁓) are used in dictionaries to indicate the omission of the entry word.
This symbol (in English) sometimes means "approximately", such as: "~30 minutes ago" meaning "approximately 30 minutes ago". It can mean "similar to", including "of the same order of magnitude as", such as: "x ~ y" meaning that x and y are of the same order of magnitude. Another approximation symbol is ≈, meaning "approximately equal to."
Asymmetric, Open shape, Monochrome, Contains both straight and curved lines, Has no crossing lines.
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