チルダ

also: ティルデ

チ

ル

ダ

Meanings

Refers to the diacritical mark ~ used in Spanish, Portuguese, and other languages, as well as in mathematics and computing.

〈文も字じ〉にチルダをつけるto add a tilde to a character
「n」にチルダをつけると「ñ」になる。
Adding a tilde to "n" makes it "ñ".