A scalable font in which the outlines of each character are geometrically defined. The most popular languages for defining outline fonts are PostScript and TrueType.
An outline font is scalable because, given a geometrical description of a typeface, a printer or other display device can generate the characters at any size (scale). Aside from offering innumerable sizes of each font, outline fonts have the added advantage that they make the most of an output device 's resolution. The more resolution a printer or monitor offers, the better an outline font will look.