Phonetics, Orthography. a diacritic (~) placed over an n, as in Spanish mañana,to indicate a palatal nasal sound or over a vowel, as in Portuguesesão, to indicate nasalization.
Mathematics. a symbol (∼) indicating equivalency or similarity between two values.
Logic. a similar symbol indicating negation.
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How to use tilde in a sentence
A letter "p with tilde above" was used twice in OE as an abbreviation for pence; this ebook uses "p" instead.The English Village Community | Frederic Seebohm
The spelling Zui with tilde is Spanish; today the word is generally written Zuni.Illustrated Catalogue of the Collections Obtained | James Stevenson
The spelling Lewis and Clarke was used consistently in the original text, as was Zui with tilde.Indian Linguistic Families Of America, North Of Mexico | John Wesley Powell
Some vowels were written with an overline—here shown as a tilde—representing a following nasal (m or n).
A doubled 'l' with a tilde across the middle is rendered as 'll'.The Agrarian Problem in the Sixteenth Century | Richard Henry Tawney
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
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