a diacritic (~) placed over an n, as in Spanish mañana, to indicate a palatal nasal sound or over a vowel, as in Portuquese são, to indicate nasalization.
Mathematics. a symbol (∼) indicating equivalency or similarity between two values.
Logic. a similar symbol indicating negation.

Origin of tilde

1860–65; < Spanish < Latin titulus superscription. See title
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Examples from the Web for tilde

Historical Examples of tilde

British Dictionary definitions for tilde



the diacritical mark (~) placed over a letter to indicate a palatal nasal consonant, as in Spanish señor. This symbol is also used in the International Phonetic Alphabet to represent any nasalized vowel

Word Origin for tilde

C19: from Spanish, from Latin titulus title, superscription
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for tilde

1864, from Spanish, metathesis of Catalan title, from Latin titulus "inscription, heading" (see title (n.)).

Online Etymology Dictionary, © 2010 Douglas Harper