substitutefont

noun
UK /ˈsʌbstɪtjuːt fɒnt/
US /ˈsʌbstɪtuːt fɑːnt/

A substitutefont is a backup font that a computer uses when the first font is missing.

When the document opened on another computer, a substitutefont appeared because the original font was not installed.


OTHER MEANINGS

2. A font automatically chosen by software to replace an unavailable font while keeping the text readable.

The browser used a substitutefont so the page still displayed correctly.

3. A secondary font assigned in a design system to cover characters the main font lacks.

The style guide lists a substitutefont for symbols and special characters.

4. A temporary font used during printing or rendering before the final font is loaded.

The preview showed a substitutefont until the web font finished downloading.