文も字じ間かん隔かく

Meanings

1

Technical term in computing and typography for the horizontal space between characters.

字じ間かん
字間 is a more common, everyday term for character spacing, while 文字間隔 is more technical and explicit.
行ぎょう間かん
行間 refers to line spacing, whereas 文字間隔 refers to spacing between individual characters.

Compound of 文字 (character) and 間隔 (interval, spacing).