fixed-width
adjectiveUK /ˌfɪkst ˈwɪdθ/
US /ˌfɪkst ˈwɪdθ/
Always the same size and not changing.
The form uses fixed-width boxes so every letter lines up neatly.
OTHER MEANINGS
2. A font in which every character takes up the same amount of space.
Programmers often read code in a fixed-width font.
3. A data format where each field has a set number of characters.
The old bank file was stored in fixed-width format.
4. A layout where columns or boxes stay the same size on the page.
The table has fixed-width columns so the numbers line up.