Hypertext Webster Gateway: "Tilde"
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Tilde \Til"de\, n. [Sp., fr. L. titulus a superscription, title,
token, sign. See {Title}, n.]
The accentual mark placed over n, and sometimes over l, in
Spanish words [thus, [~n], [~l]], indicating that, in
pronunciation, the sound of the following vowel is to be
preceded by that of the initial, or consonantal, y.
From WordNet (r) 1.7 (wn)
tilde
n : a diacritical mark (~) placed over the letter n in Spanish
to indicate a palatal nasal sound or over a vowel in
Portuguese to indicate nasalization
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