American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "x-height" in a sentence
"I think the Rather memo and the Word document may differ in x-height, with the Rather x-height slightly smaller."
"Another property that typographers look for is x-height, the proportion of the height of the lower case to the height of the uppercase."
"They observe an x-height that's too low, or a bold not bold enough, or a descender on a capital J-- the downward swoop -- not sufficiently expressive to distinguish it from an I."