Meaning of standard lining

stand'ard lin"ing

Pronunciation: [key]
— Print. Print.
  1. a system for aligning type so that all fonts of the same point size have a common baseline.
  2. a design of type that provides room on the body for accommodation of descenders of all standard type of the same point size. Cf.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.