tilde

 
Pronunciation: /ˈtɪldə/

noun

  • an accent (~) placed over Spanish n when pronounced ny (as in señor) or Portuguese a or o when nasalized (as in São Paulo), or over a vowel in phonetic transcription, indicating nasalization.
  • a symbol similar to a tilde used in mathematics and logic to indicate negation, inversion, etc..

Origin:

mid 19th century: from Spanish, based on Latin titulus (see title)