/til"deuh/ , n.
1. a wavy line dicritic 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.
2. See swung dash .
3. Math. a wavy horizontal line symbol indicating equivalency or similarity between two values.
4. Logic. a similar symbol indicating negation.
[ 1860-65; titulus superscription. See TITLE ]