X-Height
In typographyTypography is the art and technique of arranging letters to make written language legible, readable ..., the x-height or corpus size, is the height of a lower-case letter or distance between the baselineIn typography, the baseline is the imaginary horizontal line upon which the main body of a letter si... and the mean line of a typeface. Typically, this is the height of the letter x in the fontA font is a set of printable or displayable text character s in a specific style and size. The type... – and occasionally the letters u, v, w, and z.