/ Dictionary / Index L lettering: Meaning and Definition of Find definitions for: let•ter•ing Pronunciation: (let'ur-ing), [key] — n. the act or process of inscribing with or making letters. the letters in an inscription; calligraphy. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: lettering (Thesaurus) letterhead letterman Related Content Daily Word Quiz: tenacious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language