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.
the tilde symbol as a part of a URL.
a symbol similar to a tilde used in mathematics to indicate similarity, and in logic to indicate negation.
Origin:
mid 19th century: from Spanish, based on Latin titulus(see title)
