Definitions for "Font size"
A font size is the size of a font measured in points. The more points there are in a font, the larger it will appear. There are 72 points to an inch.
The size of a font, typically represented in points.
A font size describes the height of the tallest characters in a font in terms of points. It takes 72.27 points to make an inch. Web browsers tend to use 8 points as the size of their base fonts by default. In HTML files, font size may be modified by the Web author by using HTML tags.