:''Ex (typography) redirects here. For other uses of the term “ex”, see
Ex (disambiguation).''
In
typography, the 'x-height' or 'corpus size' refers to the distance between the
baseline and the
mean line in a
typeface. Typically, this is the height of the letter ''x'' in the font (which is where the terminology came from), as well as the ''a'', ''c'', ''e'', ''m'', ''n'', ''o'', ''r'', ''s'', ''u'', ''v'', ''w'', and ''z''. However, in modern typography, the x-height is simply a design characteristic of the font, and while an ''x'' is usually exactly one x-height in height, this is not always the case.
Lowercase letters whose height is greater than the x-height either have
descenders which extend below the
baseline, such as ''y'', ''g'', ''q'', and ''p'', or have
ascenders which extend above the x-height, such as ''l'', ''k'', ''b'', and ''d''. The ratio of the x-height to the
body height is one of the major characteristics that defines the appearance of a font.
See also
★
En (typography)
★
Small caps
External links
★
Definition of x-height in typophile.com