1. monospace - Adjective
2. monospace - Verb
monospace (not comparable)
Of a typeface, having characters with uniform width.
monospace (third-person singular simple present monospaces, present participle monospacing, simple past and past participle monospaced)
To type, typeset, or design text using a typeface that has the same width for each character.
And some of them have 4 styles each hence usable in professional typesetting: Arial, Calibri and Segoe UI are sans-serif fonts, Cambria and Times New Roman are serif fonts and Courier New is a monospace font. Source: Internet
The term modern is sometimes used as a synonym for monospace generic font family. Source: Internet