noun
pairwise kerning
Technical term in typography and computing for adjusting the space between specific pairs of characters.
このフォントは文字食込みの設定が細かい。
This font has detailed pairwise kerning settings.
カーニング is the more common loanword for kerning in general, while 文字食込み specifically refers to pairwise kerning.
Compound of 文字 (character) and 食込み (biting into), describing characters that visually bite into each other's space.