"x-height." YourDictionary, n.d. Web. 13 August 2018. <http://www.yourdictionary.com/x-height>.
x-height. (n.d.). Retrieved August 13th, 2018, from http://www.yourdictionary.com/x-height
In typography, the height of the letter "x" in lower case. Point size includes the x-height, the height of the ascender and the height of the descender. See typeface.