/ Dictionary / Index L letterset: Meaning and Definition of Find definitions for: let•ter•set Pronunciation: (let'ur-set"), [key] — n. a process of printing that transfers the image from a letterpress-type relief plate to a roller or blanket from which it is offset. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. letter ruling letter-size Related Content Daily Word Quiz: lunar Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language