| 释义 |
til·de
\ˈtildə\ noun
(-s)
Etymology: Spanish, from Latin titulus superscription, sign, title — more at title
1. : a mark ˜ placed especially over the letter n (as in Spanish señor sir) to denote the sound \ny\ or over vowels (as in Portuguese não no) to indicate nasality
2. : the mark ~ used in logic and mathematics as a modified n generally read “not” and serving to indicate negation or denial or occasionally used as the sign for the biconditional connective |